diff --git a/code/__DEFINES/_flags/item_flags.dm b/code/__DEFINES/_flags/item_flags.dm
index 529499127d..d28cb80bab 100644
--- a/code/__DEFINES/_flags/item_flags.dm
+++ b/code/__DEFINES/_flags/item_flags.dm
@@ -51,4 +51,4 @@
 #define ORGAN_NO_SPOIL			(1<<5)	//Do not spoil under any circumstances
 #define ORGAN_NO_DISMEMBERMENT	(1<<6)	//Immune to disembowelment.
 #define ORGAN_EDIBLE			(1<<7)	//is a snack? :D
-#define ORGAN_SYNTHETIC_EMP		(1<<6)	//Synthetic organ affected by an EMP. Deteriorates over time.
+#define ORGAN_SYNTHETIC_EMP		(1<<8)	//Synthetic organ affected by an EMP. Deteriorates over time.
diff --git a/code/__DEFINES/is_helpers.dm b/code/__DEFINES/is_helpers.dm
index cfd2cebbd0..640079e9b8 100644
--- a/code/__DEFINES/is_helpers.dm
+++ b/code/__DEFINES/is_helpers.dm
@@ -74,7 +74,6 @@ GLOBAL_LIST_INIT(turfs_without_ground, typecacheof(list(
 #define iscatperson(A) (ishumanbasic(A) && istype(A.dna.species, /datum/species/human/felinid))
 #define isethereal(A) (is_species(A, /datum/species/ethereal))
 #define isvampire(A) (is_species(A,/datum/species/vampire))
-#define isdullahan(A) (is_species(A, /datum/species/dullahan))
 
 #define ismush(A) (is_species(A, /datum/species/mush))
 #define isshadow(A) (is_species(A, /datum/species/shadow))
diff --git a/code/__DEFINES/traits.dm b/code/__DEFINES/traits.dm
index 222dc5cd39..4e97723676 100644
--- a/code/__DEFINES/traits.dm
+++ b/code/__DEFINES/traits.dm
@@ -235,6 +235,8 @@
 #define TRAIT_BEING_CARRIED "being_carried"
 #define TRAIT_GLASS_BONES "glass_bones"
 #define TRAIT_PAPER_SKIN "paper_skin"
+//used because it's more reliable than checking for the component
+#define TRAIT_DULLAHAN "dullahan"
 
 // mobility flag traits
 // IN THE FUTURE, IT WOULD BE NICE TO DO SOMETHING SIMILAR TO https://github.com/tgstation/tgstation/pull/48923/files (ofcourse not nearly the same because I have my.. thoughts on it)
diff --git a/code/datums/accents.dm b/code/datums/accents.dm
index d9e073b729..cfd6e873fa 100644
--- a/code/datums/accents.dm
+++ b/code/datums/accents.dm
@@ -94,10 +94,9 @@
 
 /datum/accent/dullahan/modify_speech(list/speech_args, datum/source, mob/living/carbon/owner)
 	if(owner)
-		if(isdullahan(owner))
-			var/datum/species/dullahan/D = owner.dna.species
-			if(isobj(D.myhead.loc))
-				var/obj/O = D.myhead.loc
-				O.say(speech_args[SPEECH_MESSAGE])
+		var/datum/component/dullahan/dullahan = owner.GetComponent(/datum/component/dullahan)
+		if(dullahan)
+			if(dullahan.dullahan_head)
+				dullahan.dullahan_head.say(speech_args[SPEECH_MESSAGE])
 	speech_args[SPEECH_MESSAGE] = ""
 	return speech_args
diff --git a/code/datums/components/dullahan.dm b/code/datums/components/dullahan.dm
new file mode 100644
index 0000000000..973f06a61e
--- /dev/null
+++ b/code/datums/components/dullahan.dm
@@ -0,0 +1,210 @@
+/datum/component/dullahan
+	var/obj/item/dullahan_head/dullahan_head
+
+/datum/component/dullahan/Initialize()
+	. = ..()
+
+	var/mob/living/carbon/human/H = parent
+	if(!H)
+		return .
+
+	ADD_TRAIT(H, TRAIT_DULLAHAN, "dullahan_component")
+	ADD_TRAIT(H, TRAIT_NOHUNGER, "dullahan_component_no_hunger")
+	ADD_TRAIT(H, TRAIT_NOBREATH, "dullahan_component_no_breath")
+
+	dullahan_head = new(get_turf(H))
+
+	update_name()
+
+	dullahan_head.owner = H
+	RegisterSignal(H, COMSIG_LIVING_REGENERATE_LIMBS, .proc/unlist_head)
+
+	// make sure the brain can't decay or fall out
+	var/obj/item/organ/brain/B = H.getorganslot(ORGAN_SLOT_BRAIN)
+	if(B)
+		B.zone = "abstract" // it exists in the ethereal plain
+		B.organ_flags = ORGAN_NO_SPOIL | ORGAN_NO_DISMEMBERMENT	| ORGAN_VITAL
+		dullahan_head.B = B
+
+	// the eyes get similar treatment
+	var/obj/item/organ/eyes/dullahan/new_eyes = new()
+	var/obj/item/organ/eyes/E = H.getorganslot(ORGAN_SLOT_EYES)
+	if(E)
+		new_eyes.left_eye_color = E.left_eye_color
+		new_eyes.right_eye_color = E.right_eye_color
+		E.Remove()
+		qdel(E)
+	new_eyes.Insert(H)
+
+	// make sure you handle the tongue correctly, too!
+	var/obj/item/organ/tongue/T = H.getorganslot(ORGAN_SLOT_TONGUE)
+	T.Remove()
+	qdel(T)
+
+	var/obj/item/organ/tongue/dullahan/new_tongue = new()
+	new_tongue.Insert(H)
+
+	// uh, eyes!
+	var/obj/item/organ/ears/dullahan_ears = H.getorganslot(ORGAN_SLOT_EARS)
+	if(dullahan_ears)
+		dullahan_ears.zone = "abstract"
+
+	// moving the brain's zone means we don't need the head to survive
+	var/obj/item/bodypart/head/head = H.get_bodypart(BODY_ZONE_HEAD)
+	if(head)
+		head.drop_limb()
+		qdel(head)
+
+	H.flags_1 &= ~(HEAR_1)
+
+	RegisterSignal(dullahan_head, COMSIG_ATOM_HEARER_IN_VIEW, .proc/include_owner)
+
+	dullahan_head.update_appearance()
+
+/datum/component/dullahan/proc/update_name(retries = 0)
+	if(retries > 30)
+		return FALSE
+	var/mob/living/carbon/human/H = parent
+	if(length(H.name))
+		dullahan_head.name = "[H.name]'s head"
+		dullahan_head.desc = "the decapitated head of [H.name]"
+		return TRUE
+	addtimer(CALLBACK(src, .proc/update_name, retries + 1), 2 SECONDS)
+
+/datum/component/dullahan/proc/include_owner(datum/source, list/processing_list, list/hearers)
+	if(!QDELETED(parent))
+		hearers += parent
+
+/datum/component/dullahan/proc/unlist_head(datum/source, noheal = FALSE, list/excluded_limbs)
+	excluded_limbs |= BODY_ZONE_HEAD // So we don't gib when regenerating limbs.
+
+/obj/item/organ/tongue/dullahan
+	zone = "abstract"
+	initial_accents = list(/datum/accent/dullahan)
+	organ_flags = ORGAN_NO_SPOIL | ORGAN_NO_DISMEMBERMENT
+
+/obj/item/organ/eyes/dullahan
+	name = "head vision"
+	desc = "An abstraction."
+	actions_types = list(/datum/action/item_action/organ_action/dullahan)
+	zone = "abstract"
+	tint = INFINITY // used to switch the vision perspective to the head on species_gain().
+	organ_flags = ORGAN_NO_SPOIL | ORGAN_NO_DISMEMBERMENT
+
+/obj/item/dullahan_head
+	name = "coders lament"
+	desc = "you shouldn't be reading this"
+	flags_1 = HEAR_1
+	var/mob/living/carbon/human/owner
+	// this is for keeping track of the overlays because you can't read the actual overlays list as it's a special byond var
+	var/list/overlays_standing
+	var/obj/item/organ/brain/B
+	w_class = WEIGHT_CLASS_BULKY
+
+/obj/item/dullahan_head/Destroy()
+	if(owner)
+		B.Remove()
+		B.forceMove(get_turf(src))
+		owner.gib()
+	. = ..()
+
+// update head sprite
+/obj/item/dullahan_head/proc/remove_head_overlays()
+	overlays_standing = list()
+	cut_overlays()
+
+/obj/item/dullahan_head/proc/add_head_overlay(var/overlay)
+	overlays_standing += overlay
+	add_overlay(overlay)
+
+/obj/item/dullahan_head/update_appearance()
+	if(owner && !HAS_TRAIT(owner, TRAIT_HUMAN_NO_RENDER))
+		remove_head_overlays()
+		// to do this without duplicating large amounts of code
+		// it's best to regenerate the head, then remove it once we have the overlays we want
+		owner.regenerate_limb(BODY_ZONE_HEAD, TRUE) // don't heal them
+		owner.cut_overlays()
+		owner.regenerate_icons(TRUE) // yes i know it's expensive but do you want me to rewrite our entire overlay system, also block recursive calls here by passing in TRUE (it wont go back to call update_appearance this way)
+		var/obj/item/bodypart/head/head = owner.get_bodypart(BODY_ZONE_HEAD)
+		if(head)
+			add_overlay(head.get_limb_icon(FALSE, TRUE, TRUE))
+			for(var/overlay in owner.overlays_standing)
+				if(istype(overlay, /mutable_appearance))
+					var/mutable_appearance/mutable = overlay
+					if(mutable.category == "HEAD")
+						add_head_overlay(mutable)
+				else
+					if(islist(overlay))
+						var/list/list_appearances = overlay
+						for(var/overlay2 in list_appearances)
+							if(istype(overlay2, /mutable_appearance))
+								var/mutable_appearance/mutable = overlay2
+								if(mutable.category == "HEAD")
+									add_head_overlay(mutable)
+			head.drop_limb()
+			qdel(head)
+
+/obj/item/dullahan_head/proc/unlist_head(datum/source, noheal = FALSE, list/excluded_limbs)
+	excluded_limbs |= BODY_ZONE_HEAD // So we don't gib when regenerating limbs.
+
+/datum/action/item_action/organ_action/dullahan
+	name = "Toggle Perspective"
+	desc = "Switch between seeing normally from your head, or blindly from your body."
+
+/datum/action/item_action/organ_action/dullahan/Trigger()
+	. = ..()
+	var/mob/living/carbon/human/H = owner
+	var/obj/item/organ/eyes/E = owner.getorganslot(ORGAN_SLOT_EYES)
+	if(E)
+		if(E.tint)
+			E.tint = 0
+		else
+			E.tint = INFINITY
+
+	var/datum/component/dullahan/D = H.GetComponent(/datum/component/dullahan)
+	if(D)
+		D.update_vision_perspective()
+
+/datum/component/dullahan/proc/update_vision_perspective()
+	var/mob/living/carbon/human/H = parent
+	if(!H)
+		return .
+	var/obj/item/organ/eyes/eyes = H.getorganslot(ORGAN_SLOT_EYES)
+	if(eyes)
+		H.update_tint()
+		if(eyes.tint)
+			H.reset_perspective(H)
+		else
+			H.reset_perspective(dullahan_head)
+
+/datum/component/dullahan/Destroy()
+	UnregisterSignal(parent, COMSIG_LIVING_REGENERATE_LIMBS)
+	dullahan_head.owner = null
+	qdel(dullahan_head)
+	REMOVE_TRAIT(parent, TRAIT_DULLAHAN, "dullahan_component")
+
+	// work out what organs to give them based on their species
+	if(ishuman(parent))
+		var/mob/living/carbon/human/H = parent
+		var/obj/item/organ/eyes/new_eyes = new H.dna.species.mutanteyes()
+		var/obj/item/organ/brain/new_brain = new H.dna.species.mutant_brain()
+		var/obj/item/organ/tongue/new_tongue = new H.dna.species.mutanttongue()
+		var/obj/item/organ/eyes/old_eyes = H.getorganslot(ORGAN_SLOT_EYES)
+		var/obj/item/organ/brain/old_brain = H.getorganslot(ORGAN_SLOT_BRAIN)
+		var/obj/item/organ/tongue/old_tongue = H.getorganslot(ORGAN_SLOT_TONGUE)
+
+		H.regenerate_limb(BODY_ZONE_HEAD, TRUE)
+		H.reset_perspective(H)
+
+		old_brain.Remove(TRUE,TRUE)
+		QDEL_NULL(old_brain)
+		new_brain.Insert(H, TRUE, TRUE)
+
+		old_eyes.Remove(TRUE,TRUE)
+		QDEL_NULL(old_eyes)
+		new_eyes.Insert(H, TRUE, TRUE)
+
+		old_tongue.Remove(TRUE,TRUE)
+		QDEL_NULL(old_tongue)
+		new_tongue.Insert(H, TRUE, TRUE)
+	. = ..()
diff --git a/code/datums/dna.dm b/code/datums/dna.dm
index 5619a09f05..bb2dab8033 100644
--- a/code/datums/dna.dm
+++ b/code/datums/dna.dm
@@ -717,16 +717,13 @@
 				death()
 				petrify(INFINITY)
 			if(3)
-				if(prob(90))
-					var/obj/item/bodypart/BP = get_bodypart(pick(BODY_ZONE_CHEST,BODY_ZONE_HEAD))
-					if(BP)
-						BP.dismember()
-					else
-						unequip_everything()
-						drop_all_held_items()
-						gib()
+				var/obj/item/bodypart/BP = get_bodypart(pick(BODY_ZONE_CHEST,BODY_ZONE_HEAD))
+				if(BP)
+					BP.dismember()
 				else
-					set_species(/datum/species/dullahan)
+					unequip_everything()
+					drop_all_held_items()
+					gib()
 
 /datum/dna/proc/update_body_size(old_size)
 	if(!holder || features["body_size"] == old_size)
diff --git a/code/datums/mutable_appearance.dm b/code/datums/mutable_appearance.dm
index b04f55ef0e..104147ebeb 100644
--- a/code/datums/mutable_appearance.dm
+++ b/code/datums/mutable_appearance.dm
@@ -4,6 +4,9 @@
 
 // Mutable appearances are children of images, just so you know.
 
+/mutable_appearance
+	var/category // listen i want to store some meta information on mutable appearances don't judge me
+
 /mutable_appearance/New()
 	..()
 	plane = FLOAT_PLANE // No clue why this is 0 by default yet images are on FLOAT_PLANE
diff --git a/code/datums/traits/neutral.dm b/code/datums/traits/neutral.dm
index aebe6ec7fa..8f7043c715 100644
--- a/code/datums/traits/neutral.dm
+++ b/code/datums/traits/neutral.dm
@@ -186,3 +186,12 @@
 	value = 0
 	medical_record_text = "Patient should not come into contact with sodium."
 	mob_trait = TRAIT_SALT_SENSITIVE
+
+/datum/quirk/dullahan
+	name = "Dullahan"
+	desc = "Your head is detached from your body."
+	value = 0
+	medical_record_text = "Patient seems to have some kind of spatial link with their decapitated head."
+
+/datum/quirk/dullahan/post_add()
+	quirk_holder.AddComponent(/datum/component/dullahan)
diff --git a/code/datums/wounds/slash.dm b/code/datums/wounds/slash.dm
index 6a631ab8f4..68740e78ab 100644
--- a/code/datums/wounds/slash.dm
+++ b/code/datums/wounds/slash.dm
@@ -177,7 +177,7 @@
 	if(isinsect(victim) || iscatperson(victim) || ismammal(victim) || isdwarf(victim) || ismonkey(victim)) // Yep you can lick monkeys.
 		user.reagents.add_reagent(/datum/reagent/hairball, 2)
 
-	else if(ishumanbasic(victim) || isflyperson(victim) || islizard(victim) || isdullahan(victim))
+	else if(ishumanbasic(victim) || isflyperson(victim) || islizard(victim) || HAS_TRAIT(victim, TRAIT_DULLAHAN))
 		user.reagents.add_reagent(/datum/reagent/hairball, 1)
 
 	if(blood_flow > minimum_flow)
diff --git a/code/game/machinery/recycler.dm b/code/game/machinery/recycler.dm
index c1dac389bf..c561170af4 100644
--- a/code/game/machinery/recycler.dm
+++ b/code/game/machinery/recycler.dm
@@ -119,7 +119,7 @@
 		if(istype(AM, /obj/item))
 			var/obj/item/bodypart/head/as_head = AM
 			var/obj/item/mmi/as_mmi = AM
-			if(istype(AM, /obj/item/organ/brain) || (istype(as_head) && as_head.brain) || (istype(as_mmi) && as_mmi.brain) || istype(AM, /obj/item/dullahan_relay))
+			if(istype(AM, /obj/item/organ/brain) || (istype(as_head) && as_head.brain) || (istype(as_mmi) && as_mmi.brain) || istype(AM, /obj/item/dullahan_head))
 				living_detected = living_detected ? living_detected : AM
 			nom += AM
 		else if(isliving(AM))
diff --git a/code/game/objects/structures/mirror.dm b/code/game/objects/structures/mirror.dm
index a70d9d4678..ffb48ce633 100644
--- a/code/game/objects/structures/mirror.dm
+++ b/code/game/objects/structures/mirror.dm
@@ -41,6 +41,7 @@
 		if(new_style)
 			H.hair_style = new_style
 
+		H.update_mutant_bodyparts()
 		H.update_hair()
 
 /obj/structure/mirror/examine_status(mob/user)
diff --git a/code/modules/client/preferences_savefile.dm b/code/modules/client/preferences_savefile.dm
index 3f95e699dc..a46300ab54 100644
--- a/code/modules/client/preferences_savefile.dm
+++ b/code/modules/client/preferences_savefile.dm
@@ -364,6 +364,18 @@ SAVEFILE UPDATING/VERSIONING - 'Simplified', or rather, more coder-friendly ~Car
 		if(length(old_flavor_text) && !length(features["feature_flavor_text"]))
 			features["feature_flavor_text"] = old_flavor_text
 
+	// hey what happened to 55
+
+	// dullahans as a species cease to exist
+	if(current_version < 56)
+		var/species_id = S["species"]
+		if(species_id == SPECIES_DULLAHAN)
+			S["species"] = SPECIES_HUMAN
+			if(islist(S["all_quirks"]))
+				S["all_quirks"] += "Dullahan"
+			else
+				S["all_quirks"] = list("Dullahan")
+
 /datum/preferences/proc/load_path(ckey,filename="preferences.sav")
 	if(!ckey)
 		return
diff --git a/code/modules/holiday/halloween/jacqueen.dm b/code/modules/holiday/halloween/jacqueen.dm
index 77187532f9..66ae3dce4b 100644
--- a/code/modules/holiday/halloween/jacqueen.dm
+++ b/code/modules/holiday/halloween/jacqueen.dm
@@ -219,23 +219,11 @@
 /mob/living/simple_animal/jacq/proc/treat(mob/living/carbon/C, gender)
 	visible_message("<b>[src]</b> gives off a glowing smile, <span class='spooky'>\"What ken Ah offer ye? I can magic up an object, a potion or a plushie fer ye.\"</span>")
 	jacqrunes("What ken Ah offer ye? I can magic up an object, a potion or a plushie fer ye.", C)
-	var/choices_reward = list("Object - 3 candies", "Potion - 2 candies", "Jacqueline Tracker - 2 candies", "Plushie - 1 candy", "Can I get to know you instead?", "Become a pumpkinhead dullahan (perma) - 4 candies")
+	var/choices_reward = list("Object - 3 candies", "Potion - 2 candies", "Jacqueline Tracker - 2 candies", "Plushie - 1 candy", "Can I get to know you instead?")
 	var/choice_reward = input(usr, "Trick or Treat?", "Trick or Treat?") in choices_reward
 
 	//rewards
 	switch(choice_reward)
-		if("Become a pumpkinhead dullahan (perma) - 4 candies")
-			if(!take_candies(C, 4))
-				visible_message("<b>[src]</b> raises an eyebrown, <span class='spooky'>\"It's 4 candies for that [gender]! Thems the rules!\"</span>")
-				jacqrunes("It's 4 candies for that [gender]! Thems the rules!", C)
-				return
-			visible_message("<b>[src]</b> waves their arms around, <span class='spooky'>\"Off comes your head, a pumpkin taking it's stead!\"</span>")
-			jacqrunes("Off comes your head, a pumpkin taking it's stead!", C)
-			C.reagents.add_reagent(/datum/reagent/mutationtoxin/pumpkinhead, 5)
-			sleep(20)
-			poof()
-			return
-
 		if("Object - 3 candies")
 			if(!take_candies(C, 3))
 				visible_message("<b>[src]</b> raises an eyebrown, <span class='spooky'>\"It's 3 candies per trinket [gender]! Thems the rules!\"</span>")
@@ -688,12 +676,6 @@
 	else
 		..()
 
-/datum/reagent/mutationtoxin/pumpkinhead
-	name = "Pumpkin head mutation toxin"
-	race = /datum/species/dullahan/pumpkin
-	mutationtext = "<span class='spooky'>The pain subsides. You feel your head roll off your shoulders... and you smell pumpkin."
-	//I couldn't get the replace head sprite with a pumpkin to work so, it is what it is.
-
 /mob/living/simple_animal/jacq/proc/check_candies(mob/living/carbon/C)
 	var/invs = C.get_contents()
 	var/candy_count = 0
diff --git a/code/modules/mob/dead/new_player/sprite_accessories/_sprite_accessories.dm b/code/modules/mob/dead/new_player/sprite_accessories/_sprite_accessories.dm
index 08ae75d728..964a171e59 100644
--- a/code/modules/mob/dead/new_player/sprite_accessories/_sprite_accessories.dm
+++ b/code/modules/mob/dead/new_player/sprite_accessories/_sprite_accessories.dm
@@ -77,6 +77,8 @@
 	//For soft-restricting markings to species IDs
 	var/list/recommended_species
 
+	var/mutable_category // simply do not worry about this value
+
 /datum/sprite_accessory/proc/is_not_visible(var/mob/living/carbon/human/H, var/tauric) //return if the accessory shouldn't be shown
 	return FALSE
 
diff --git a/code/modules/mob/dead/new_player/sprite_accessories/alienpeople.dm b/code/modules/mob/dead/new_player/sprite_accessories/alienpeople.dm
index 3972bdc2c3..ba334d2934 100644
--- a/code/modules/mob/dead/new_player/sprite_accessories/alienpeople.dm
+++ b/code/modules/mob/dead/new_player/sprite_accessories/alienpeople.dm
@@ -48,6 +48,7 @@
 	icon = 'modular_citadel/icons/mob/xeno_parts_greyscale.dmi'
 	mutant_part_string = "xhead"
 	relevant_layers = list(BODY_ADJ_LAYER)
+	mutable_category = "HEAD"
 
 /datum/sprite_accessory/xeno_head/is_not_visible(var/mob/living/carbon/human/H, var/tauric)
 	var/obj/item/bodypart/head/HD = H.get_bodypart(BODY_ZONE_HEAD)
diff --git a/code/modules/mob/dead/new_player/sprite_accessories/arachnid.dm b/code/modules/mob/dead/new_player/sprite_accessories/arachnid.dm
index 460b41f0d9..cd032b6a2a 100644
--- a/code/modules/mob/dead/new_player/sprite_accessories/arachnid.dm
+++ b/code/modules/mob/dead/new_player/sprite_accessories/arachnid.dm
@@ -49,6 +49,7 @@
 	relevant_layers = list(BODY_ADJ_LAYER, BODY_FRONT_LAYER)
 	mutant_part_string = "mandibles"
 	color_src = 0
+	mutable_category = "HEAD"
 
 /datum/sprite_accessory/arachnid_mandibles/none
 	name = "None"
diff --git a/code/modules/mob/dead/new_player/sprite_accessories/caps.dm b/code/modules/mob/dead/new_player/sprite_accessories/caps.dm
index d974672490..5b30591d07 100644
--- a/code/modules/mob/dead/new_player/sprite_accessories/caps.dm
+++ b/code/modules/mob/dead/new_player/sprite_accessories/caps.dm
@@ -2,6 +2,7 @@
 	icon = 'icons/mob/mutant_bodyparts.dmi'
 	color_src = HAIR
 	relevant_layers = list(BODY_ADJ_LAYER)
+	mutable_category = "HEAD"
 
 /datum/sprite_accessory/caps/round
 	name = "Round"
diff --git a/code/modules/mob/dead/new_player/sprite_accessories/ears.dm b/code/modules/mob/dead/new_player/sprite_accessories/ears.dm
index 928c4351c3..e03bf5d613 100644
--- a/code/modules/mob/dead/new_player/sprite_accessories/ears.dm
+++ b/code/modules/mob/dead/new_player/sprite_accessories/ears.dm
@@ -2,6 +2,7 @@
 	icon = 'icons/mob/mutant_bodyparts.dmi'
 	mutant_part_string = "ears"
 	relevant_layers = list(BODY_BEHIND_LAYER, BODY_ADJ_LAYER, BODY_FRONT_LAYER)
+	mutable_category = "HEAD"
 
 /datum/sprite_accessory/ears/is_not_visible(var/mob/living/carbon/human/H, var/tauric)
 	var/obj/item/bodypart/head/HD = H.get_bodypart(BODY_ZONE_HEAD)
diff --git a/code/modules/mob/dead/new_player/sprite_accessories/hair_face.dm b/code/modules/mob/dead/new_player/sprite_accessories/hair_face.dm
index f3e179e802..06d4c34f72 100644
--- a/code/modules/mob/dead/new_player/sprite_accessories/hair_face.dm
+++ b/code/modules/mob/dead/new_player/sprite_accessories/hair_face.dm
@@ -4,6 +4,7 @@
 /datum/sprite_accessory/facial_hair
 	icon = 'icons/mob/hair.dmi'
 	gender = MALE // barf (unless you're a dorf, dorfs dig chix w/ beards :P)
+	mutable_category = "HEAD"
 
 // please make sure they're sorted alphabetically and categorized
 /datum/sprite_accessory/facial_hair/shaved //this is exempt from the alphabetical sort
diff --git a/code/modules/mob/dead/new_player/sprite_accessories/hair_head.dm b/code/modules/mob/dead/new_player/sprite_accessories/hair_head.dm
index e002fa369d..9e868d69c6 100644
--- a/code/modules/mob/dead/new_player/sprite_accessories/hair_head.dm
+++ b/code/modules/mob/dead/new_player/sprite_accessories/hair_head.dm
@@ -3,6 +3,7 @@
 //////////////////////
 /datum/sprite_accessory/hair
 	icon = 'icons/mob/hair.dmi'	  // default icon for all hairs
+	mutable_category = "HEAD"
 
 	// please make sure they're sorted alphabetically and, where needed, categorized
 	// try to capitalize the names please~
diff --git a/code/modules/mob/dead/new_player/sprite_accessories/horns.dm b/code/modules/mob/dead/new_player/sprite_accessories/horns.dm
index 33b513f947..bcc339f332 100644
--- a/code/modules/mob/dead/new_player/sprite_accessories/horns.dm
+++ b/code/modules/mob/dead/new_player/sprite_accessories/horns.dm
@@ -2,6 +2,7 @@
 	icon = 'icons/mob/mutant_bodyparts.dmi'
 	color_src = HORNCOLOR
 	relevant_layers = list(HORNS_LAYER)
+	mutable_category = "HEAD"
 
 /datum/sprite_accessory/horns/is_not_visible(var/mob/living/carbon/human/H, var/tauric)
 	var/obj/item/bodypart/head/HD = H.get_bodypart(BODY_ZONE_HEAD)
diff --git a/code/modules/mob/dead/new_player/sprite_accessories/ipc_synths.dm b/code/modules/mob/dead/new_player/sprite_accessories/ipc_synths.dm
index 8bda196faa..ec5c6ea792 100644
--- a/code/modules/mob/dead/new_player/sprite_accessories/ipc_synths.dm
+++ b/code/modules/mob/dead/new_player/sprite_accessories/ipc_synths.dm
@@ -6,6 +6,11 @@
 	icon = 'modular_citadel/icons/mob/ipc_screens.dmi'
 	color_src = null
 	relevant_layers = list(BODY_ADJ_LAYER)
+	mutable_category = "HEAD"
+
+/datum/sprite_accessory/screen/is_not_visible(var/mob/living/carbon/human/H, var/tauric)
+	var/obj/item/bodypart/head/HD = H.get_bodypart(BODY_ZONE_HEAD)
+	return (HD == null) // it's not visible if head is null
 
 /datum/sprite_accessory/screen/blank
 	name = "Blank"
@@ -133,6 +138,7 @@
 	relevant_layers = list(BODY_ADJ_LAYER)
 	recommended_species = list("ipc")
 	mutant_part_string = "ipc_antenna"
+	mutable_category = "HEAD"
 
 /datum/sprite_accessory/antenna/none
 	name = "None"
diff --git a/code/modules/mob/dead/new_player/sprite_accessories/snouts.dm b/code/modules/mob/dead/new_player/sprite_accessories/snouts.dm
index 75b62e8c0f..aa9ec41dcc 100644
--- a/code/modules/mob/dead/new_player/sprite_accessories/snouts.dm
+++ b/code/modules/mob/dead/new_player/sprite_accessories/snouts.dm
@@ -2,6 +2,7 @@
 	icon = 'icons/mob/mutant_bodyparts.dmi'
 	mutant_part_string = "snout"
 	relevant_layers = list(BODY_ADJ_LAYER, BODY_FRONT_LAYER)
+	mutable_category = "HEAD"
 
 /datum/sprite_accessory/snouts/is_not_visible(var/mob/living/carbon/human/H, var/tauric)
 	var/obj/item/bodypart/head/HD = H.get_bodypart(BODY_ZONE_HEAD)
diff --git a/code/modules/mob/dead/new_player/sprite_accessories/synthliz.dm b/code/modules/mob/dead/new_player/sprite_accessories/synthliz.dm
index 08897ade34..870f4f5ba4 100644
--- a/code/modules/mob/dead/new_player/sprite_accessories/synthliz.dm
+++ b/code/modules/mob/dead/new_player/sprite_accessories/synthliz.dm
@@ -5,6 +5,7 @@
 	color_src = MUTCOLORS
 	name = "Synthetic Lizard - Snout"
 	icon_state = "synthliz_basic"
+	mutable_category = "HEAD"
 
 /datum/sprite_accessory/snouts/mam_snouts/synthliz/synthliz_under
 	icon = 'modular_citadel/icons/mob/synthliz_snouts.dmi'
diff --git a/code/modules/mob/living/carbon/human/human.dm b/code/modules/mob/living/carbon/human/human.dm
index c60e4c6cb2..b81863e932 100644
--- a/code/modules/mob/living/carbon/human/human.dm
+++ b/code/modules/mob/living/carbon/human/human.dm
@@ -954,9 +954,6 @@
 /mob/living/carbon/human/species/corporate
 	race = /datum/species/corporate
 
-/mob/living/carbon/human/species/dullahan
-	race = /datum/species/dullahan
-
 /mob/living/carbon/human/species/felinid
 	race = /datum/species/human/felinid
 
diff --git a/code/modules/mob/living/carbon/human/species.dm b/code/modules/mob/living/carbon/human/species.dm
index afceabf2a6..94e0685e62 100644
--- a/code/modules/mob/living/carbon/human/species.dm
+++ b/code/modules/mob/living/carbon/human/species.dm
@@ -345,11 +345,11 @@ GLOBAL_LIST_EMPTY(roundstart_race_names)
 	var/obj/item/organ/stomach/stomach = C.getorganslot(ORGAN_SLOT_STOMACH)
 	var/obj/item/organ/tail/tail = C.getorganslot(ORGAN_SLOT_TAIL)
 
-	var/should_have_brain = TRUE
+	var/should_have_brain = !(HAS_TRAIT(C, TRAIT_DULLAHAN)) // do not mess with a dullahans brain
 	var/should_have_heart = !(NOBLOOD in species_traits)
 	var/should_have_lungs = ((TRAIT_AUXILIARY_LUNGS in inherent_traits) || !(TRAIT_NOBREATH in inherent_traits))
 	var/should_have_appendix = !(TRAIT_NOHUNGER in inherent_traits)
-	var/should_have_eyes = TRUE
+	var/should_have_eyes = !(HAS_TRAIT(C, TRAIT_DULLAHAN)) // .. or their eyes
 	var/should_have_ears = TRUE
 	var/should_have_tongue = TRUE
 	var/should_have_liver = !(NOLIVER in species_traits)
@@ -697,6 +697,7 @@ GLOBAL_LIST_EMPTY(roundstart_race_names)
 				fhair_file = 'icons/mob/facialhair_extensions.dmi'
 
 			var/mutable_appearance/facial_overlay = mutable_appearance(fhair_file, fhair_state, -HAIR_LAYER)
+			facial_overlay.category = "HEAD"
 
 			if(!forced_colour)
 				if(hair_color)
@@ -734,8 +735,10 @@ GLOBAL_LIST_EMPTY(roundstart_race_names)
 
 	if(!hair_hidden || dynamic_hair_suffix)
 		var/mutable_appearance/hair_overlay = mutable_appearance(layer = -HAIR_LAYER)
+		hair_overlay.category = "HEAD"
 		var/mutable_appearance/gradient_overlay = mutable_appearance(layer = -HAIR_LAYER)
-		if(!hair_hidden && !H.getorgan(/obj/item/organ/brain)) //Applies the debrained overlay if there is no brain
+		gradient_overlay.category = "HEAD"
+		if(!hair_hidden && !H.getorgan(/obj/item/organ/brain) && !H.GetComponent(/datum/component/dullahan)) //Applies the debrained overlay if there is no brain (ignore if they are dullahan)
 			if(!(NOBLOOD in species_traits))
 				hair_overlay.icon = 'icons/mob/human_parts.dmi'
 				hair_overlay.icon_state = "debrained"
@@ -800,7 +803,7 @@ GLOBAL_LIST_EMPTY(roundstart_race_names)
 
 	H.apply_overlay(HAIR_LAYER)
 
-/datum/species/proc/handle_body(mob/living/carbon/human/H)
+/datum/species/proc/handle_body(mob/living/carbon/human/H, block_recursive_calls = FALSE)
 	H.remove_overlay(BODY_LAYER)
 
 	var/list/standing = list()
@@ -811,6 +814,7 @@ GLOBAL_LIST_EMPTY(roundstart_race_names)
 		// lipstick
 		if(H.lip_style && (LIPS in species_traits))
 			var/mutable_appearance/lip_overlay = mutable_appearance('icons/mob/lips.dmi', "lips_[H.lip_style]", -BODY_LAYER)
+			lip_overlay.category = "HEAD"
 			lip_overlay.color = H.lip_color
 
 			if(OFFSET_LIPS in H.dna.species.offset_features)
@@ -821,7 +825,7 @@ GLOBAL_LIST_EMPTY(roundstart_race_names)
 
 		// eyes
 		if(!(NOEYES in species_traits))
-			var/has_eyes = H.getorganslot(ORGAN_SLOT_EYES)
+			var/has_eyes = H.getorganslot(ORGAN_SLOT_EYES) || HAS_TRAIT(H, TRAIT_DULLAHAN) // if they are a dullahan just assume eyes exist
 			if(!has_eyes)
 				standing += mutable_appearance('icons/mob/eyes.dmi', "eyes_missing", -BODY_LAYER)
 			else
@@ -832,6 +836,8 @@ GLOBAL_LIST_EMPTY(roundstart_race_names)
 					right_state = "[eye_type]_right_eye"
 				var/mutable_appearance/left_eye = mutable_appearance('icons/mob/eyes.dmi', left_state, -BODY_LAYER)
 				var/mutable_appearance/right_eye = mutable_appearance('icons/mob/eyes.dmi', right_state, -BODY_LAYER)
+				left_eye.category = "HEAD"
+				right_eye.category = "HEAD"
 				if((EYECOLOR in species_traits) && has_eyes)
 					left_eye.color = "#[H.left_eye_color]"
 					right_eye.color = "#[H.right_eye_color]"
@@ -892,9 +898,9 @@ GLOBAL_LIST_EMPTY(roundstart_race_names)
 		H.overlays_standing[BODY_LAYER] = standing
 
 	H.apply_overlay(BODY_LAYER)
-	handle_mutant_bodyparts(H)
+	handle_mutant_bodyparts(H, null, block_recursive_calls)
 
-/datum/species/proc/handle_mutant_bodyparts(mob/living/carbon/human/H, forced_colour)
+/datum/species/proc/handle_mutant_bodyparts(mob/living/carbon/human/H, forced_colour, block_recursive_calls = FALSE)
 	var/list/bodyparts_to_add = mutant_bodyparts.Copy()
 
 	H.remove_overlay(BODY_BEHIND_LAYER)
@@ -1009,6 +1015,7 @@ GLOBAL_LIST_EMPTY(roundstart_race_names)
 		for(var/bodypart in relevant_layers[layer])
 			var/datum/sprite_accessory/S = bodypart
 			var/mutable_appearance/accessory_overlay = mutable_appearance(S.icon, layer = -layernum)
+			accessory_overlay.category = S.mutable_category
 			bodypart = S.mutant_part_string || dna_feature_as_text_string[S]
 
 			if(S.gender_specific)
@@ -1113,6 +1120,7 @@ GLOBAL_LIST_EMPTY(roundstart_race_names)
 
 			if(S.extra) //apply the extra overlay, if there is one
 				var/mutable_appearance/extra_accessory_overlay = mutable_appearance(S.icon, layer = -layernum)
+				extra_accessory_overlay.category = S.mutable_category
 				if(S.gender_specific)
 					extra_accessory_overlay.icon_state = "[g]_[bodypart]_extra_[S.icon_state]_[layertext]"
 				else
@@ -1159,6 +1167,7 @@ GLOBAL_LIST_EMPTY(roundstart_race_names)
 
 			if(S.extra2) //apply the extra overlay, if there is one
 				var/mutable_appearance/extra2_accessory_overlay = mutable_appearance(S.icon, layer = -layernum)
+				extra2_accessory_overlay.category = S.mutable_category
 				if(S.gender_specific)
 					extra2_accessory_overlay.icon_state = "[g]_[bodypart]_extra2_[S.icon_state]_[layertext]"
 				else
@@ -1206,6 +1215,11 @@ GLOBAL_LIST_EMPTY(roundstart_race_names)
 	H.apply_overlay(BODY_FRONT_LAYER)
 	H.apply_overlay(HORNS_LAYER)
 
+	if(!block_recursive_calls)
+		var/datum/component/dullahan/D = H.GetComponent(/datum/component/dullahan)
+		if(D && D.dullahan_head)
+			D.dullahan_head.update_appearance()
+
 /*
  * Equip the outfit required for life. Replaces items currently worn.
  */
diff --git a/code/modules/mob/living/carbon/human/species_types/dullahan.dm b/code/modules/mob/living/carbon/human/species_types/dullahan.dm
deleted file mode 100644
index facc3dfd8d..0000000000
--- a/code/modules/mob/living/carbon/human/species_types/dullahan.dm
+++ /dev/null
@@ -1,165 +0,0 @@
-/datum/species/dullahan
-	name = "Dullahan"
-	id = SPECIES_DULLAHAN
-	default_color = "FFFFFF"
-	species_traits = list(EYECOLOR,HAIR,FACEHAIR,LIPS,HAS_FLESH,HAS_BONE)
-	inherent_traits = list(TRAIT_NOHUNGER,TRAIT_NOBREATH)
-	mutant_bodyparts = list("tail_human" = "None", "ears" = "None", "deco_wings" = "None")
-	use_skintones = USE_SKINTONES_GRAYSCALE_CUSTOM
-	mutant_brain = /obj/item/organ/brain/dullahan
-	mutanteyes = /obj/item/organ/eyes/dullahan
-	mutanttongue = /obj/item/organ/tongue/dullahan
-	mutantears = /obj/item/organ/ears/dullahan
-	blacklisted = TRUE
-	limbs_id = SPECIES_HUMAN
-	skinned_type = /obj/item/stack/sheet/animalhide/human
-	has_field_of_vision = FALSE //Too much of a trouble, their vision is already bound to their severed head.
-	species_category = SPECIES_CATEGORY_UNDEAD
-	var/pumpkin = FALSE
-	wings_icons = SPECIES_WINGS_SKELETAL //seems suitable for an undead.
-
-	var/obj/item/dullahan_relay/myhead
-
-/datum/species/dullahan/pumpkin
-	name = "Pumpkin Head Dullahan"
-	id = "pumpkindullahan"
-	pumpkin = TRUE
-
-/datum/species/dullahan/check_roundstart_eligible()
-	if(SSevents.holidays && SSevents.holidays[HALLOWEEN])
-		return TRUE
-	return ..()
-
-/datum/species/dullahan/on_species_gain(mob/living/carbon/human/H, datum/species/old_species)
-	. = ..()
-	H.flags_1 &= ~(HEAR_1)
-	var/obj/item/bodypart/head/head = H.get_bodypart(BODY_ZONE_HEAD)
-	if(head)
-		if(pumpkin)//Pumpkinhead!
-			head.animal_origin = 100
-			head.icon = 'icons/obj/clothing/hats.dmi'
-			head.icon_state = "hardhat1_pumpkin_j"
-			head.custom_head = TRUE
-		head.drop_limb()
-		if(!QDELETED(head)) //drop_limb() deletes the limb if it's no drop location and dummy humans used for rendering icons are located in nullspace. Do the math.
-			head.throwforce = 25
-			myhead = new /obj/item/dullahan_relay (head, H)
-			H.put_in_hands(head)
-			var/obj/item/organ/eyes/E = H.getorganslot(ORGAN_SLOT_EYES)
-			for(var/datum/action/item_action/organ_action/OA in E.actions)
-				OA.Trigger()
-
-/datum/species/dullahan/on_species_loss(mob/living/carbon/human/H)
-	H.flags_1 |= HEAR_1
-	H.reset_perspective(H)
-	if(myhead)
-		var/obj/item/dullahan_relay/DR = myhead
-		myhead = null
-		DR.owner = null
-		qdel(DR)
-	H.regenerate_limb(BODY_ZONE_HEAD,FALSE)
-	..()
-
-/datum/species/dullahan/spec_life(mob/living/carbon/human/H)
-	if(QDELETED(myhead))
-		myhead = null
-		H.gib()
-	var/obj/item/bodypart/head/head2 = H.get_bodypart(BODY_ZONE_HEAD)
-	if(head2)
-		myhead = null
-		H.gib()
-
-/datum/species/dullahan/proc/update_vision_perspective(mob/living/carbon/human/H)
-	var/obj/item/organ/eyes/eyes = H.getorganslot(ORGAN_SLOT_EYES)
-	if(eyes)
-		H.update_tint()
-		if(eyes.tint)
-			H.reset_perspective(H)
-		else
-			H.reset_perspective(myhead)
-
-/obj/item/organ/brain/dullahan
-	decoy_override = TRUE
-	organ_flags = ORGAN_NO_SPOIL//Do not decay
-
-/obj/item/organ/tongue/dullahan
-	zone = "abstract"
-	accents = list(/datum/accent/dullahan)
-
-/obj/item/organ/ears/dullahan
-	zone = "abstract"
-
-/obj/item/organ/eyes/dullahan
-	name = "head vision"
-	desc = "An abstraction."
-	actions_types = list(/datum/action/item_action/organ_action/dullahan)
-	zone = "abstract"
-	tint = INFINITY // used to switch the vision perspective to the head on species_gain().
-
-/datum/action/item_action/organ_action/dullahan
-	name = "Toggle Perspective"
-	desc = "Switch between seeing normally from your head, or blindly from your body."
-
-/datum/action/item_action/organ_action/dullahan/Trigger()
-	. = ..()
-	var/obj/item/organ/eyes/dullahan/DE = target
-	if(DE.tint)
-		DE.tint = 0
-	else
-		DE.tint = INFINITY
-
-	if(ishuman(owner))
-		var/mob/living/carbon/human/H = owner
-		if(isdullahan(H))
-			var/datum/species/dullahan/D = H.dna.species
-			D.update_vision_perspective(H)
-
-/obj/item/dullahan_relay
-	name = "dullahan relay"
-	var/mob/living/owner
-	flags_1 = HEAR_1
-
-/obj/item/dullahan_relay/Initialize(mapload, mob/living/carbon/human/new_owner)
-	. = ..()
-	if(!new_owner)
-		return INITIALIZE_HINT_QDEL
-	owner = new_owner
-	START_PROCESSING(SSobj, src)
-	RegisterSignal(owner, COMSIG_MOB_CLICKED_SHIFT_ON, .proc/examinate_check)
-	RegisterSignal(src, COMSIG_ATOM_HEARER_IN_VIEW, .proc/include_owner)
-	RegisterSignal(owner, COMSIG_LIVING_REGENERATE_LIMBS, .proc/unlist_head)
-	RegisterSignal(owner, COMSIG_LIVING_REVIVE, .proc/retrieve_head)
-
-/obj/item/dullahan_relay/proc/examinate_check(mob/source, atom/target)
-	if(source.client.eye == src)
-		return COMPONENT_ALLOW_EXAMINATE
-
-/obj/item/dullahan_relay/proc/include_owner(datum/source, list/processing_list, list/hearers)
-	if(!QDELETED(owner))
-		hearers += owner
-
-/obj/item/dullahan_relay/proc/unlist_head(datum/source, noheal = FALSE, list/excluded_limbs)
-	excluded_limbs |= BODY_ZONE_HEAD // So we don't gib when regenerating limbs.
-
-//Retrieving the owner's head for better ahealing.
-/obj/item/dullahan_relay/proc/retrieve_head(datum/source, full_heal, admin_revive)
-	if(admin_revive)
-		var/obj/item/bodypart/head/H = loc
-		var/turf/T = get_turf(owner)
-		if(H && istype(H) && T && !(H in owner.GetAllContents()))
-			H.forceMove(T)
-
-/obj/item/dullahan_relay/process()
-	if(!istype(loc, /obj/item/bodypart/head) || QDELETED(owner))
-		. = PROCESS_KILL
-		qdel(src)
-
-/obj/item/dullahan_relay/Destroy()
-	if(!QDELETED(owner))
-		var/mob/living/carbon/human/H = owner
-		if(isdullahan(H))
-			var/datum/species/dullahan/D = H.dna.species
-			D.myhead = null
-			owner.gib()
-	owner = null
-	..()
diff --git a/code/modules/mob/living/carbon/human/update_icons.dm b/code/modules/mob/living/carbon/human/update_icons.dm
index a0620c8990..db0b4ddfac 100644
--- a/code/modules/mob/living/carbon/human/update_icons.dm
+++ b/code/modules/mob/living/carbon/human/update_icons.dm
@@ -58,14 +58,14 @@ There are several things that need to be remembered:
 		dna.species.handle_hair(src)
 
 //used when putting/removing clothes that hide certain mutant body parts to just update those and not update the whole body.
-/mob/living/carbon/human/proc/update_mutant_bodyparts()
+/mob/living/carbon/human/proc/update_mutant_bodyparts(block_recursive_calls = FALSE)
 	if(!HAS_TRAIT(src, TRAIT_HUMAN_NO_RENDER))
-		dna.species.handle_mutant_bodyparts(src)
+		dna.species.handle_mutant_bodyparts(src, null, block_recursive_calls)
 
-/mob/living/carbon/human/update_body(update_genitals = FALSE)
+/mob/living/carbon/human/update_body(update_genitals = FALSE, block_recursive_calls = FALSE)
 	if(!HAS_TRAIT(src, TRAIT_HUMAN_NO_RENDER))
 		remove_overlay(BODY_LAYER)
-		dna.species.handle_body(src)
+		dna.species.handle_body(src, block_recursive_calls)
 		..()
 		if(update_genitals)
 			update_genitals()
@@ -75,24 +75,24 @@ There are several things that need to be remembered:
 
 /* --------------------------------------- */
 //For legacy support.
-/mob/living/carbon/human/regenerate_icons()
+/mob/living/carbon/human/regenerate_icons(block_recursive_calls = FALSE)
 	if(!HAS_TRAIT(src, TRAIT_HUMAN_NO_RENDER))
 		if(!..())
 			icon_render_key = null //invalidate bodyparts cache
-			update_body(TRUE)
+			update_body(TRUE, block_recursive_calls)
 			update_hair()
-			update_inv_w_uniform()
+			update_inv_w_uniform(block_recursive_calls)
 			update_inv_wear_id()
 			update_inv_gloves()
 			update_inv_glasses()
 			update_inv_ears()
 			update_inv_shoes()
 			update_inv_s_store()
-			update_inv_wear_mask()
-			update_inv_head()
+			update_inv_wear_mask(block_recursive_calls)
+			update_inv_head(block_recursive_calls)
 			update_inv_belt()
 			update_inv_back()
-			update_inv_wear_suit()
+			update_inv_wear_suit(block_recursive_calls)
 			update_inv_pockets()
 			update_inv_neck()
 			update_transform()
@@ -123,7 +123,7 @@ There are several things that need to be remembered:
 	apply_overlay(ANTAG_LAYER)
 
 
-/mob/living/carbon/human/update_inv_w_uniform()
+/mob/living/carbon/human/update_inv_w_uniform(block_recursive_calls = FALSE)
 	if(!HAS_TRAIT(src, TRAIT_HUMAN_NO_RENDER))
 		remove_overlay(UNIFORM_LAYER)
 
@@ -173,7 +173,7 @@ There are several things that need to be remembered:
 			overlays_standing[UNIFORM_LAYER] = uniform_overlay
 
 		apply_overlay(UNIFORM_LAYER)
-		update_mutant_bodyparts()
+		update_mutant_bodyparts(block_recursive_calls)
 
 /mob/living/carbon/human/update_inv_wear_id()
 	if(!HAS_TRAIT(src, TRAIT_HUMAN_NO_RENDER))
@@ -349,7 +349,7 @@ There are several things that need to be remembered:
 			overlays_standing[SUIT_STORE_LAYER] = s_store_overlay
 		apply_overlay(SUIT_STORE_LAYER)
 
-/mob/living/carbon/human/update_inv_head()
+/mob/living/carbon/human/update_inv_head(block_recursive_calls = FALSE)
 	if(!HAS_TRAIT(src, TRAIT_HUMAN_NO_RENDER))
 		remove_overlay(HEAD_LAYER)
 
@@ -387,7 +387,7 @@ There are several things that need to be remembered:
 				head_overlay.pixel_y += dna.species.offset_features[OFFSET_HEAD][2]
 			overlays_standing[HEAD_LAYER] = head_overlay
 		apply_overlay(HEAD_LAYER)
-		update_mutant_bodyparts()
+		update_mutant_bodyparts(block_recursive_calls)
 
 /mob/living/carbon/human/update_inv_belt()
 	if(!HAS_TRAIT(src, TRAIT_HUMAN_NO_RENDER))
@@ -411,7 +411,7 @@ There are several things that need to be remembered:
 			overlays_standing[BELT_LAYER] = belt_overlay
 		apply_overlay(BELT_LAYER)
 
-/mob/living/carbon/human/update_inv_wear_suit()
+/mob/living/carbon/human/update_inv_wear_suit(block_recursive_calls = FALSE)
 	if(!HAS_TRAIT(src, TRAIT_HUMAN_NO_RENDER))
 		remove_overlay(SUIT_LAYER)
 
@@ -471,7 +471,7 @@ There are several things that need to be remembered:
 				suit_overlay = center_image(suit_overlay, dimension_x, dimension_y)
 			overlays_standing[SUIT_LAYER] = suit_overlay
 		update_hair()
-		update_mutant_bodyparts()
+		update_mutant_bodyparts(block_recursive_calls)
 
 		apply_overlay(SUIT_LAYER)
 
@@ -498,7 +498,7 @@ There are several things that need to be remembered:
 			update_observer_view(r_store)
 
 
-/mob/living/carbon/human/update_inv_wear_mask()
+/mob/living/carbon/human/update_inv_wear_mask(block_recursive_calls = FALSE)
 	if(!HAS_TRAIT(src, TRAIT_HUMAN_NO_RENDER))
 		remove_overlay(FACEMASK_LAYER)
 
@@ -537,7 +537,7 @@ There are several things that need to be remembered:
 				mask_overlay.pixel_y += dna.species.offset_features[OFFSET_FACEMASK][2]
 			overlays_standing[FACEMASK_LAYER] = mask_overlay
 			apply_overlay(FACEMASK_LAYER)
-		update_mutant_bodyparts() //e.g. upgate needed because mask now hides lizard snout
+		update_mutant_bodyparts(block_recursive_calls) //e.g. upgate needed because mask now hides lizard snout
 
 /mob/living/carbon/human/update_inv_back()
 	if(!HAS_TRAIT(src, TRAIT_HUMAN_NO_RENDER))
@@ -791,7 +791,7 @@ use_mob_overlay_icon: if FALSE, it will always use the default_icon_file even if
 		// eyes
 		if(!(NOEYES in dna.species.species_traits))
 			var/has_eyes = getorganslot(ORGAN_SLOT_EYES)
-			if(!has_eyes)
+			if(!has_eyes && !HAS_TRAIT(src, TRAIT_DULLAHAN))
 				add_overlay(mutable_appearance('icons/mob/eyes.dmi', "eyes_missing", -BODY_LAYER))
 			else
 				var/left_state = DEFAULT_LEFT_EYE_STATE
@@ -803,6 +803,8 @@ use_mob_overlay_icon: if FALSE, it will always use the default_icon_file even if
 						right_state = eye_type + "_right_eye"
 				var/mutable_appearance/left_eye = mutable_appearance('icons/mob/eyes.dmi', left_state, -BODY_LAYER)
 				var/mutable_appearance/right_eye = mutable_appearance('icons/mob/eyes.dmi', right_state, -BODY_LAYER)
+				left_eye.category = "HEAD"
+				right_eye.category = "HEAD"
 				if((EYECOLOR in dna.species.species_traits) && has_eyes)
 					left_eye.color = "#" + left_eye_color
 					right_eye.color = "#" + right_eye_color
diff --git a/code/modules/projectiles/projectile/magic.dm b/code/modules/projectiles/projectile/magic.dm
index 9761881067..2959666a4c 100644
--- a/code/modules/projectiles/projectile/magic.dm
+++ b/code/modules/projectiles/projectile/magic.dm
@@ -37,7 +37,7 @@
 			return BULLET_ACT_BLOCK
 		if(iscarbon(target))
 			var/mob/living/carbon/C = target
-			if(!is_species(C, /datum/species/dullahan)) //No accidental instagibbing dullahans please
+			if(HAS_TRAIT(C, TRAIT_DULLAHAN)) //No accidental instagibbing dullahans please
 				C.regenerate_limbs()
 			C.regenerate_organs()
 		if(target.revive(full_heal = 1))
diff --git a/code/modules/reagents/chemistry/reagents/medicine_reagents.dm b/code/modules/reagents/chemistry/reagents/medicine_reagents.dm
index 8336f95a0d..23d506a00f 100644
--- a/code/modules/reagents/chemistry/reagents/medicine_reagents.dm
+++ b/code/modules/reagents/chemistry/reagents/medicine_reagents.dm
@@ -1084,6 +1084,13 @@
 	else
 		B.gain_trauma_type(BRAIN_TRAUMA_SPECIAL)
 
+/datum/reagent/medicine/neurine/reaction_obj(obj/O, reac_volume)
+	if(istype(O, /obj/item/dullahan_head))
+		var/obj/item/dullahan_head/head = O
+		if(head.B)
+			head.B.applyOrganDamage(-20)
+		if(head.owner)
+			head.owner.cure_trauma_type(resilience = TRAUMA_RESILIENCE_SURGERY)
 
 /datum/reagent/medicine/neurine/on_mob_life(mob/living/carbon/C)
 	if(holder.has_reagent(/datum/reagent/consumable/ethanol/neurotoxin))
diff --git a/code/modules/surgery/bodyparts/dismemberment.dm b/code/modules/surgery/bodyparts/dismemberment.dm
index 6b5b4a14aa..96b9290239 100644
--- a/code/modules/surgery/bodyparts/dismemberment.dm
+++ b/code/modules/surgery/bodyparts/dismemberment.dm
@@ -142,7 +142,7 @@
 
 	update_icon_dropped()
 	C.update_health_hud() //update the healthdoll
-	C.update_body()
+	C.update_body(FALSE, TRUE) // block recursive calls because we dont want to crash, i.e. don't tell a dullahan to update when dropping its limb
 	C.update_hair()
 	C.update_mobility()
 
@@ -370,7 +370,7 @@
 	update_disabled()
 
 	C.updatehealth()
-	C.update_body()
+	C.update_body(FALSE, TRUE) // again block recursive calls because dullahans will try update their icons by regenerating their head
 	C.update_hair()
 	C.update_damage_overlays()
 	C.update_mobility()
diff --git a/code/modules/surgery/bodyparts/head.dm b/code/modules/surgery/bodyparts/head.dm
index 8c283f5ebc..ea43740093 100644
--- a/code/modules/surgery/bodyparts/head.dm
+++ b/code/modules/surgery/bodyparts/head.dm
@@ -134,7 +134,7 @@
 		I.pixel_y = px_y
 	add_overlay(standing)
 
-/obj/item/bodypart/head/get_limb_icon(dropped)
+/obj/item/bodypart/head/get_limb_icon(dropped, ignore_brain = FALSE)
 	if(custom_head)
 		return
 	cut_overlays()
@@ -152,7 +152,7 @@
 					. += facial_overlay
 
 			//Applies the debrained overlay if there is no brain
-			if(!brain)
+			if(!brain && !ignore_brain)
 				var/image/debrain_overlay = image(layer = -HAIR_LAYER, dir = SOUTH)
 				if(animal_origin == ALIEN_BODYPART)
 					debrain_overlay.icon = 'icons/mob/animal_parts.dmi'
@@ -175,12 +175,13 @@
 
 		// lipstick
 		if(lip_style)
-			var/image/lips_overlay = image('icons/mob/lips.dmi', "lips_[lip_style]", -BODY_LAYER, SOUTH)
+			var/mutable_appearance/lips_overlay = mutable_appearance('icons/mob/lips.dmi', "lips_[lip_style]", -BODY_LAYER, SOUTH)
+			lips_overlay.category = "HEAD"
 			lips_overlay.color = lip_color
 			. += lips_overlay
 
 		// eyes
-		if(eyes)
+		if(eyes || ignore_brain)
 			var/left_state = DEFAULT_LEFT_EYE_STATE
 			var/right_state = DEFAULT_RIGHT_EYE_STATE
 			if(owner && owner.dna.species)
@@ -189,12 +190,14 @@
 					left_state = eye_type + "_left_eye"
 					right_state = eye_type + "_right_eye"
 			if(left_state != DEFAULT_NO_EYE_STATE)
-				var/image/left_eye = image('icons/mob/hair.dmi', left_state, -BODY_LAYER, SOUTH)
+				var/mutable_appearance/left_eye = mutable_appearance('icons/mob/hair.dmi', left_state, -BODY_LAYER, SOUTH)
+				left_eye.category = "HEAD"
 				if(eyes.left_eye_color)
 					left_eye.color = "#" + eyes.left_eye_color
 				. += left_eye
 			if(right_state != DEFAULT_NO_EYE_STATE)
-				var/image/right_eye = image('icons/mob/hair.dmi', right_state, -BODY_LAYER, SOUTH)
+				var/mutable_appearance/right_eye = mutable_appearance('icons/mob/hair.dmi', right_state, -BODY_LAYER, SOUTH)
+				right_eye.category = "HEAD"
 				if(eyes.right_eye_color)
 					right_eye.color = "#" + eyes.right_eye_color
 				. += right_eye
diff --git a/tgstation.dme b/tgstation.dme
index 332b463335..c010fc66fe 100644
--- a/tgstation.dme
+++ b/tgstation.dme
@@ -531,6 +531,7 @@
 #include "code\datums\components\combat_mode.dm"
 #include "code\datums\components\construction.dm"
 #include "code\datums\components\dejavu.dm"
+#include "code\datums\components\dullahan.dm"
 #include "code\datums\components\earprotection.dm"
 #include "code\datums\components\edible.dm"
 #include "code\datums\components\edit_complainer.dm"
@@ -2717,7 +2718,6 @@
 #include "code\modules\mob\living\carbon\human\species_types\arachnid.dm"
 #include "code\modules\mob\living\carbon\human\species_types\bugmen.dm"
 #include "code\modules\mob\living\carbon\human\species_types\corporate.dm"
-#include "code\modules\mob\living\carbon\human\species_types\dullahan.dm"
 #include "code\modules\mob\living\carbon\human\species_types\dwarves.dm"
 #include "code\modules\mob\living\carbon\human\species_types\ethereal.dm"
 #include "code\modules\mob\living\carbon\human\species_types\felinid.dm"