diff --git a/code/modules/client/preferences.dm b/code/modules/client/preferences.dm
index 6c43253e2e5..fc945cebcf0 100644
--- a/code/modules/client/preferences.dm
+++ b/code/modules/client/preferences.dm
@@ -377,7 +377,7 @@ GLOBAL_LIST_EMPTY(preferences_datums)
 			//Mutant stuff
 			var/mutant_category = 0
 
-			if("tail_lizard" in pref_species.default_features)
+			if(pref_species.mutant_bodyparts["tail_lizard"])
 				if(!mutant_category)
 					dat += APPEARANCE_CATEGORY_COLUMN
 
@@ -390,7 +390,7 @@ GLOBAL_LIST_EMPTY(preferences_datums)
 					dat += "</td>"
 					mutant_category = 0
 
-			if("snout" in pref_species.default_features)
+			if(pref_species.mutant_bodyparts["snout"])
 				if(!mutant_category)
 					dat += APPEARANCE_CATEGORY_COLUMN
 
@@ -403,7 +403,7 @@ GLOBAL_LIST_EMPTY(preferences_datums)
 					dat += "</td>"
 					mutant_category = 0
 
-			if("horns" in pref_species.default_features)
+			if(pref_species.mutant_bodyparts["horns"])
 				if(!mutant_category)
 					dat += APPEARANCE_CATEGORY_COLUMN
 
@@ -416,7 +416,7 @@ GLOBAL_LIST_EMPTY(preferences_datums)
 					dat += "</td>"
 					mutant_category = 0
 
-			if("frills" in pref_species.default_features)
+			if(pref_species.mutant_bodyparts["frills"])
 				if(!mutant_category)
 					dat += APPEARANCE_CATEGORY_COLUMN
 
@@ -429,7 +429,7 @@ GLOBAL_LIST_EMPTY(preferences_datums)
 					dat += "</td>"
 					mutant_category = 0
 
-			if("spines" in pref_species.default_features)
+			if(pref_species.mutant_bodyparts["spines"])
 				if(!mutant_category)
 					dat += APPEARANCE_CATEGORY_COLUMN
 
@@ -442,7 +442,7 @@ GLOBAL_LIST_EMPTY(preferences_datums)
 					dat += "</td>"
 					mutant_category = 0
 
-			if("body_markings" in pref_species.default_features)
+			if(pref_species.mutant_bodyparts["body_markings"])
 				if(!mutant_category)
 					dat += APPEARANCE_CATEGORY_COLUMN
 
@@ -455,7 +455,7 @@ GLOBAL_LIST_EMPTY(preferences_datums)
 					dat += "</td>"
 					mutant_category = 0
 
-			if("legs" in pref_species.default_features)
+			if(pref_species.mutant_bodyparts["legs"])
 				if(!mutant_category)
 					dat += APPEARANCE_CATEGORY_COLUMN
 
@@ -468,7 +468,7 @@ GLOBAL_LIST_EMPTY(preferences_datums)
 					dat += "</td>"
 					mutant_category = 0
 
-			if("moth_wings" in pref_species.default_features)
+			if(pref_species.mutant_bodyparts["moth_wings"])
 				if(!mutant_category)
 					dat += APPEARANCE_CATEGORY_COLUMN
 
@@ -481,7 +481,7 @@ GLOBAL_LIST_EMPTY(preferences_datums)
 					dat += "</td>"
 					mutant_category = 0
 
-			if("moth_antennae" in pref_species.default_features)
+			if(pref_species.mutant_bodyparts["moth_antennae"])
 				if(!mutant_category)
 					dat += APPEARANCE_CATEGORY_COLUMN
 
@@ -494,7 +494,7 @@ GLOBAL_LIST_EMPTY(preferences_datums)
 					dat += "</td>"
 					mutant_category = 0
 
-			if("moth_markings" in pref_species.default_features)
+			if(pref_species.mutant_bodyparts["moth_markings"])
 				if(!mutant_category)
 					dat += APPEARANCE_CATEGORY_COLUMN
 
@@ -507,7 +507,7 @@ GLOBAL_LIST_EMPTY(preferences_datums)
 					dat += "</td>"
 					mutant_category = 0
 
-			if("tail_human" in pref_species.default_features)
+			if(pref_species.mutant_bodyparts["tail_human"])
 				if(!mutant_category)
 					dat += APPEARANCE_CATEGORY_COLUMN
 
@@ -520,7 +520,7 @@ GLOBAL_LIST_EMPTY(preferences_datums)
 					dat += "</td>"
 					mutant_category = 0
 
-			if("ears" in pref_species.default_features)
+			if(pref_species.mutant_bodyparts["ears"])
 				if(!mutant_category)
 					dat += APPEARANCE_CATEGORY_COLUMN
 
@@ -541,7 +541,7 @@ GLOBAL_LIST_EMPTY(preferences_datums)
 
 			if(CONFIG_GET(flag/join_with_mutant_humans))
 
-				if("wings" in pref_species.default_features && GLOB.r_wings_list.len >1)
+				if(pref_species.mutant_bodyparts["wings"] && GLOB.r_wings_list.len >1)
 					if(!mutant_category)
 						dat += APPEARANCE_CATEGORY_COLUMN
 
@@ -1932,10 +1932,10 @@ GLOBAL_LIST_EMPTY(preferences_datums)
 	character.set_species(chosen_species, icon_update = FALSE, pref_load = TRUE)
 	character.dna.real_name = character.real_name
 
-	if("tail_lizard" in pref_species.default_features)
-		character.dna.species.mutant_bodyparts |= "tail_lizard"
-	if("spines" in pref_species.default_features)
-		character.dna.species.mutant_bodyparts |= "spines"
+	if(pref_species.mutant_bodyparts["tail_lizard"])
+		character.dna.species.mutant_bodyparts["tail_lizard"] = pref_species.mutant_bodyparts["tail_lizard"]
+	if(pref_species.mutant_bodyparts["spines"])
+		character.dna.species.mutant_bodyparts["spines"] = pref_species.mutant_bodyparts["spines"]
 
 	if(icon_updates)
 		character.update_body()
diff --git a/code/modules/mob/living/carbon/human/emote.dm b/code/modules/mob/living/carbon/human/emote.dm
index 9a8b251b70b..a9e0a8d77bc 100644
--- a/code/modules/mob/living/carbon/human/emote.dm
+++ b/code/modules/mob/living/carbon/human/emote.dm
@@ -142,7 +142,7 @@
 /datum/emote/living/carbon/human/wing/select_message_type(mob/user, intentional)
 	. = ..()
 	var/mob/living/carbon/human/H = user
-	if("wings" in H.dna.species.mutant_bodyparts)
+	if(H.dna.species.mutant_bodyparts["wings"])
 		. = "opens " + message
 	else
 		. = "closes " + message
@@ -157,17 +157,17 @@
 /mob/living/carbon/human/proc/OpenWings()
 	if(!dna || !dna.species)
 		return
-	if("wings" in dna.species.mutant_bodyparts)
+	if(dna.species.mutant_bodyparts["wings"])
+		dna.species.mutant_bodyparts["wingsopen"] = dna.species.mutant_bodyparts["wings"]
 		dna.species.mutant_bodyparts -= "wings"
-		dna.species.mutant_bodyparts |= "wingsopen"
 	update_body()
 
 /mob/living/carbon/human/proc/CloseWings()
 	if(!dna || !dna.species)
 		return
-	if("wingsopen" in dna.species.mutant_bodyparts)
+	if(dna.species.mutant_bodyparts["wingsopen"])
+		dna.species.mutant_bodyparts["wings"] = dna.species.mutant_bodyparts["wingsopen"]
 		dna.species.mutant_bodyparts -= "wingsopen"
-		dna.species.mutant_bodyparts |= "wings"
 	update_body()
 	if(isturf(loc))
 		var/turf/T = loc
diff --git a/code/modules/mob/living/carbon/human/species.dm b/code/modules/mob/living/carbon/human/species.dm
index 100b97bea59..be548064265 100644
--- a/code/modules/mob/living/carbon/human/species.dm
+++ b/code/modules/mob/living/carbon/human/species.dm
@@ -54,17 +54,17 @@ GLOBAL_LIST_EMPTY(roundstart_races)
 	var/say_mod = "says"
 	///What languages this species can understand and say. Use a [language holder datum][/datum/language_holder] in this var.
 	var/species_language_holder = /datum/language_holder
-	/// Default mutant bodyparts for this species, like horns. Don't forget to set one for every mutant bodypart you allow this species to have.
-	var/list/default_features = list()
-	/// Visible CURRENT bodyparts that are unique to a species.
-	///
-	/// DO NOT USE THIS AS A LIST OF ALL POSSIBLE BODYPARTS AS IT WILL FUCK
-	/// SHIT UP! Changes to this list for non-species specific bodyparts (ie
-	/// cat ears and tails) should be assigned at organ level if possible.
-	/// Layer hiding is handled by [/datum/species/proc/handle_mutant_bodyparts]
-	/// below.
-	//var/list/mutant_bodyparts = list() - ORIGINAL
-	var/list/list/mutant_bodyparts = list() //SKYRAT EDIT CHANGE - CUSTOMIZATION
+	/**
+	  * Visible CURRENT bodyparts that are unique to a species.
+	  * DO NOT USE THIS AS A LIST OF ALL POSSIBLE BODYPARTS AS IT WILL FUCK
+	  * SHIT UP! Changes to this list for non-species specific bodyparts (ie
+	  * cat ears and tails) should be assigned at organ level if possible.
+	  * Assoc values are defaults for given bodyparts, also modified by aforementioned organs.
+	  * They also allow for faster '[]' list access versus 'in'. Other than that, they are useless right now.
+	  * Layer hiding is handled by [/datum/species/proc/handle_mutant_bodyparts] below.
+	  */
+	//var/list/mutant_bodyparts = list() //ORIGINAL
+	var/list/list/mutant_bodyparts = list() //SKYRAT EDIT CHANGE - CUSTOMIZATION (typed list)
 	///Internal organs that are unique to this race, like a tail.
 	var/list/mutant_organs = list()
 	///Multiplier for the race's speed. Positive numbers make it move slower, negative numbers make it move faster.
@@ -346,7 +346,7 @@ GLOBAL_LIST_EMPTY(roundstart_races)
 		C.hud_used.update_locked_slots()
 
 	// this needs to be FIRST because qdel calls update_body which checks if we have DIGITIGRADE legs or not and if not then removes DIGITIGRADE from species_traits
-	if(("legs" in C.dna.species.mutant_bodyparts) && C.dna.features["legs"] == "Digitigrade Legs")
+	if(C.dna.species.mutant_bodyparts["legs"] && C.dna.features["legs"] == "Digitigrade Legs")
 		species_traits += DIGITIGRADE
 	if(DIGITIGRADE in species_traits)
 		C.Digitigrade_Leg_Swap(FALSE)
@@ -441,8 +441,7 @@ GLOBAL_LIST_EMPTY(roundstart_races)
 		if(C.movement_type & FLYING)
 			ToggleFlight(C)
 	if(C.dna && C.dna.species && (C.dna.features["wings"] == wings_icon))
-		if("wings" in C.dna.species.mutant_bodyparts)
-			C.dna.species.mutant_bodyparts -= "wings"
+		C.dna.species.mutant_bodyparts -= "wings"
 		C.dna.features["wings"] = "None"
 		C.update_body()
 
@@ -738,64 +737,64 @@ GLOBAL_LIST_EMPTY(roundstart_races)
 
 	var/obj/item/bodypart/head/HD = H.get_bodypart(BODY_ZONE_HEAD)
 
-	if("tail_lizard" in mutant_bodyparts)
+	if(mutant_bodyparts["tail_lizard"])
 		if(H.wear_suit && (H.wear_suit.flags_inv & HIDEJUMPSUIT))
 			bodyparts_to_add -= "tail_lizard"
 
-	if("waggingtail_lizard" in mutant_bodyparts)
+	if(mutant_bodyparts["waggingtail_lizard"])
 		if(H.wear_suit && (H.wear_suit.flags_inv & HIDEJUMPSUIT))
 			bodyparts_to_add -= "waggingtail_lizard"
-		else if ("tail_lizard" in mutant_bodyparts)
+		else if (mutant_bodyparts["tail_lizard"])
 			bodyparts_to_add -= "waggingtail_lizard"
 
-	if("tail_human" in mutant_bodyparts)
+	if(mutant_bodyparts["tail_human"])
 		if(H.wear_suit && (H.wear_suit.flags_inv & HIDEJUMPSUIT))
 			bodyparts_to_add -= "tail_human"
 
 
-	if("waggingtail_human" in mutant_bodyparts)
+	if(mutant_bodyparts["waggingtail_human"])
 		if(H.wear_suit && (H.wear_suit.flags_inv & HIDEJUMPSUIT))
 			bodyparts_to_add -= "waggingtail_human"
-		else if ("tail_human" in mutant_bodyparts)
+		else if (mutant_bodyparts["tail_human"])
 			bodyparts_to_add -= "waggingtail_human"
 
-	if("spines" in mutant_bodyparts)
+	if(mutant_bodyparts["spines"])
 		if(!H.dna.features["spines"] || H.dna.features["spines"] == "None" || H.wear_suit && (H.wear_suit.flags_inv & HIDEJUMPSUIT))
 			bodyparts_to_add -= "spines"
 
-	if("waggingspines" in mutant_bodyparts)
+	if(mutant_bodyparts["waggingspines"])
 		if(!H.dna.features["spines"] || H.dna.features["spines"] == "None" || H.wear_suit && (H.wear_suit.flags_inv & HIDEJUMPSUIT))
 			bodyparts_to_add -= "waggingspines"
-		else if ("tail" in mutant_bodyparts)
+		else if (mutant_bodyparts["tail"])
 			bodyparts_to_add -= "waggingspines"
 
-	if("snout" in mutant_bodyparts) //Take a closer look at that snout!
+	if(mutant_bodyparts["snout"]) //Take a closer look at that snout!
 		if((H.wear_mask && (H.wear_mask.flags_inv & HIDEFACE)) || (H.head && (H.head.flags_inv & HIDEFACE)) || !HD || HD.status == BODYPART_ROBOTIC)
 			bodyparts_to_add -= "snout"
 
-	if("frills" in mutant_bodyparts)
+	if(mutant_bodyparts["frills"])
 		if(!H.dna.features["frills"] || H.dna.features["frills"] == "None" || H.head && (H.head.flags_inv & HIDEEARS) || !HD || HD.status == BODYPART_ROBOTIC)
 			bodyparts_to_add -= "frills"
 
-	if("horns" in mutant_bodyparts)
+	if(mutant_bodyparts["horns"])
 		if(!H.dna.features["horns"] || H.dna.features["horns"] == "None" || H.head && (H.head.flags_inv & HIDEHAIR) || (H.wear_mask && (H.wear_mask.flags_inv & HIDEHAIR)) || !HD || HD.status == BODYPART_ROBOTIC)
 			bodyparts_to_add -= "horns"
 
-	if("ears" in mutant_bodyparts)
+	if(mutant_bodyparts["ears"])
 		if(!H.dna.features["ears"] || H.dna.features["ears"] == "None" || H.head && (H.head.flags_inv & HIDEHAIR) || (H.wear_mask && (H.wear_mask.flags_inv & HIDEHAIR)) || !HD || HD.status == BODYPART_ROBOTIC)
 			bodyparts_to_add -= "ears"
 
-	if("wings" in mutant_bodyparts)
+	if(mutant_bodyparts["wings"])
 		if(!H.dna.features["wings"] || H.dna.features["wings"] == "None" || (H.wear_suit && (H.wear_suit.flags_inv & HIDEJUMPSUIT) && (!H.wear_suit.species_exception || !is_type_in_list(src, H.wear_suit.species_exception))))
 			bodyparts_to_add -= "wings"
 
-	if("wings_open" in mutant_bodyparts)
+	if(mutant_bodyparts["wings_open"])
 		if(H.wear_suit && (H.wear_suit.flags_inv & HIDEJUMPSUIT) && (!H.wear_suit.species_exception || !is_type_in_list(src, H.wear_suit.species_exception)))
 			bodyparts_to_add -= "wings_open"
-		else if ("wings" in mutant_bodyparts)
+		else if (mutant_bodyparts["wings"])
 			bodyparts_to_add -= "wings_open"
 
-	if("moth_antennae" in mutant_bodyparts)
+	if(mutant_bodyparts["moth_antennae"])
 		if(!H.dna.features["moth_antennae"] || H.dna.features["moth_antennae"] == "None" || !HD)
 			bodyparts_to_add -= "moth_antennae"
 
@@ -1936,7 +1935,7 @@ GLOBAL_LIST_EMPTY(roundstart_races)
 		fly = new
 		fly.Grant(H)
 	if(H.dna.features["wings"] != wings_icon)
-		mutant_bodyparts |= "wings"
+		mutant_bodyparts["wings"] = wings_icon
 		H.dna.features["wings"] = wings_icon
 		H.update_body()
 
diff --git a/code/modules/mob/living/carbon/human/species_types/dullahan.dm b/code/modules/mob/living/carbon/human/species_types/dullahan.dm
index fcd97492e47..4585e532e51 100644
--- a/code/modules/mob/living/carbon/human/species_types/dullahan.dm
+++ b/code/modules/mob/living/carbon/human/species_types/dullahan.dm
@@ -4,7 +4,7 @@
 	default_color = "FFFFFF"
 	species_traits = list(EYECOLOR,HAIR,FACEHAIR,LIPS, HAS_FLESH, HAS_BONE)
 	inherent_traits = list(TRAIT_NOHUNGER,TRAIT_NOBREATH)
-	default_features = list("mcolor" = "FFF", "tail_human" = "None", "ears" = "None", "wings" = "None")
+	mutant_bodyparts = list("tail_human" = "None", "ears" = "None", "wings" = "None")
 	use_skintones = TRUE
 	mutantbrain = /obj/item/organ/brain/dullahan
 	mutanteyes = /obj/item/organ/eyes/dullahan
diff --git a/code/modules/mob/living/carbon/human/species_types/felinid.dm b/code/modules/mob/living/carbon/human/species_types/felinid.dm
index 274758e9f5f..6f638c7da85 100644
--- a/code/modules/mob/living/carbon/human/species_types/felinid.dm
+++ b/code/modules/mob/living/carbon/human/species_types/felinid.dm
@@ -5,8 +5,7 @@
 	say_mod = "meows"
 	limbs_id = "human"
 
-	mutant_bodyparts = list("ears", "tail_human")
-	default_features = list("mcolor" = "FFF", "tail_human" = "Cat", "ears" = "Cat", "wings" = "None")
+	mutant_bodyparts = list("tail_human" = "Cat", "ears" = "Cat", "wings" = "None")
 
 	//mutantears = /obj/item/organ/ears/cat //SKYRAT EDIT REMOVAL - CUSTOMIZATION
 	//mutant_organs = list(/obj/item/organ/tail/cat) //SKYRAT EDIT REMOVAL - CUSTOMIZATION
@@ -30,23 +29,23 @@
 	. = ..()
 
 /datum/species/human/felinid/can_wag_tail(mob/living/carbon/human/H)
-	return ("tail_human" in mutant_bodyparts) || ("waggingtail_human" in mutant_bodyparts)
+	return mutant_bodyparts["tail_human"] || mutant_bodyparts["waggingtail_human"]
 
 /datum/species/human/felinid/is_wagging_tail(mob/living/carbon/human/H)
-	return ("waggingtail_human" in mutant_bodyparts)
+	return mutant_bodyparts["waggingtail_human"]
 
 /datum/species/human/felinid/start_wagging_tail(mob/living/carbon/human/H)
-	if("tail_human" in mutant_bodyparts)
+	if(mutant_bodyparts["tail_human"])
+		mutant_bodyparts["waggingtail_human"] = mutant_bodyparts["tail_human"]
 		mutant_bodyparts -= "tail_human"
-		mutant_bodyparts |= "waggingtail_human"
 	H.update_body()
 */
 //SKYRAT EDIT REMOVAL END
 
 /datum/species/human/felinid/stop_wagging_tail(mob/living/carbon/human/H)
-	if("waggingtail_human" in mutant_bodyparts)
+	if(mutant_bodyparts["waggingtail_human"])
+		mutant_bodyparts["tail_human"] = mutant_bodyparts["waggingtail_human"]
 		mutant_bodyparts -= "waggingtail_human"
-		mutant_bodyparts |= "tail_human"
 	H.update_body()
 
 /datum/species/human/felinid/on_species_gain(mob/living/carbon/C, datum/species/old_species, pref_load)
diff --git a/code/modules/mob/living/carbon/human/species_types/humans.dm b/code/modules/mob/living/carbon/human/species_types/humans.dm
index fce8d234aa4..5848371b092 100644
--- a/code/modules/mob/living/carbon/human/species_types/humans.dm
+++ b/code/modules/mob/living/carbon/human/species_types/humans.dm
@@ -3,7 +3,7 @@
 	id = "human"
 	default_color = "FFFFFF"
 	species_traits = list(EYECOLOR,HAIR,FACEHAIR,LIPS,HAS_FLESH,HAS_BONE)
-	default_features = list("mcolor" = "FFF", "wings" = "None")
+	mutant_bodyparts = list("wings" = "None")
 	use_skintones = 1
 	skinned_type = /obj/item/stack/sheet/animalhide/human
 	disliked_food = GROSS | RAW
diff --git a/code/modules/mob/living/carbon/human/species_types/lizardpeople.dm b/code/modules/mob/living/carbon/human/species_types/lizardpeople.dm
index 9d3c47e2bd7..9360203fa84 100644
--- a/code/modules/mob/living/carbon/human/species_types/lizardpeople.dm
+++ b/code/modules/mob/living/carbon/human/species_types/lizardpeople.dm
@@ -6,13 +6,13 @@
 	default_color = "00FF00"
 	species_traits = list(MUTCOLORS,EYECOLOR,LIPS,HAS_FLESH,HAS_BONE)
 	inherent_biotypes = MOB_ORGANIC|MOB_HUMANOID|MOB_REPTILE
-	mutant_bodyparts = list("tail_lizard", "snout", "spines", "horns", "frills", "body_markings", "legs")
+	mutant_bodyparts = list("tail_lizard" = "Smooth", "snout" = "Round", "horns" = "None",
+						"frills" = "None", "spines" = "None", "body_markings" = "None", "legs" = "Normal Legs")
 	mutanttongue = /obj/item/organ/tongue/lizard
 	//mutant_organs = list(/obj/item/organ/tail/lizard) //SKYRAT EDIT REMOVAL - CUSTOMIZATION
 	coldmod = 1.5
 	heatmod = 0.67
 	payday_modifier = 0.75
-	default_features = list("mcolor" = "0F0", "tail_lizard" = "Smooth", "snout" = "Round", "horns" = "None", "frills" = "None", "spines" = "None", "body_markings" = "None", "legs" = "Normal Legs")
 	changesource_flags = MIRROR_BADMIN | WABBAJACK | MIRROR_PRIDE | MIRROR_MAGIC | RACE_SWAP | ERT_SPAWN | SLIME_EXTRACT
 	attack_verb = "slash"
 	attack_sound = 'sound/weapons/slash.ogg'
@@ -60,25 +60,25 @@
 	. = ..()
 
 /datum/species/lizard/can_wag_tail(mob/living/carbon/human/H)
-	return ("tail_lizard" in mutant_bodyparts) || ("waggingtail_lizard" in mutant_bodyparts)
+	return mutant_bodyparts["tail_lizard"] || mutant_bodyparts["waggingtail_lizard"]
 
 /datum/species/lizard/is_wagging_tail(mob/living/carbon/human/H)
-	return ("waggingtail_lizard" in mutant_bodyparts)
+	return mutant_bodyparts["waggingtail_lizard"]
 
 /datum/species/lizard/start_wagging_tail(mob/living/carbon/human/H)
-	if("tail_lizard" in mutant_bodyparts)
+	if(mutant_bodyparts["tail_lizard"])
+		mutant_bodyparts["waggingtail_lizard"] = mutant_bodyparts["tail_lizard"]
+		mutant_bodyparts["waggingspines"] = mutant_bodyparts["spines"]
 		mutant_bodyparts -= "tail_lizard"
 		mutant_bodyparts -= "spines"
-		mutant_bodyparts |= "waggingtail_lizard"
-		mutant_bodyparts |= "waggingspines"
 	H.update_body()
 
 /datum/species/lizard/stop_wagging_tail(mob/living/carbon/human/H)
-	if("waggingtail_lizard" in mutant_bodyparts)
+	if(mutant_bodyparts["waggingtail_lizard"])
+		mutant_bodyparts["tail_lizard"] = mutant_bodyparts["waggingtail_lizard"]
+		mutant_bodyparts["spines"] = mutant_bodyparts["waggingspines"]
 		mutant_bodyparts -= "waggingtail_lizard"
 		mutant_bodyparts -= "waggingspines"
-		mutant_bodyparts |= "tail_lizard"
-		mutant_bodyparts |= "spines"
 	H.update_body()
 
 /datum/species/lizard/on_species_gain(mob/living/carbon/C, datum/species/old_species, pref_load)
@@ -97,10 +97,7 @@
 		var/obj/item/organ/tail/lizard/new_tail = new /obj/item/organ/tail/lizard()
 
 		new_tail.tail_type = C.dna.features["tail_lizard"]
-		C.dna.species.mutant_bodyparts |= "tail_lizard"
-
 		new_tail.spines = C.dna.features["spines"]
-		C.dna.species.mutant_bodyparts |= "spines"
 
 		// organ.Insert will qdel any existing organs in the same slot, so
 		// we don't need to manage that.
diff --git a/code/modules/mob/living/carbon/human/species_types/mothmen.dm b/code/modules/mob/living/carbon/human/species_types/mothmen.dm
index bc0d31e8047..ef18bfa4184 100644
--- a/code/modules/mob/living/carbon/human/species_types/mothmen.dm
+++ b/code/modules/mob/living/carbon/human/species_types/mothmen.dm
@@ -5,8 +5,7 @@
 	default_color = "00FF00"
 	species_traits = list(LIPS, NOEYESPRITES, HAS_FLESH, HAS_BONE, HAS_MARKINGS)
 	inherent_biotypes = MOB_ORGANIC|MOB_HUMANOID|MOB_BUG
-	mutant_bodyparts = list("moth_wings", "moth_antennae", "moth_markings")
-	default_features = list("moth_wings" = "Plain", "moth_antennae" = "Plain", "moth_markings" = "None")
+	mutant_bodyparts = list("moth_wings" = "Plain", "moth_antennae" = "Plain", "moth_markings" = "None")
 	attack_verb = "slash"
 	attack_sound = 'sound/weapons/slash.ogg'
 	miss_sound = 'sound/weapons/slashmiss.ogg'
diff --git a/code/modules/mob/living/carbon/human/species_types/mushpeople.dm b/code/modules/mob/living/carbon/human/species_types/mushpeople.dm
index ca20e5e6aa7..885850f417f 100644
--- a/code/modules/mob/living/carbon/human/species_types/mushpeople.dm
+++ b/code/modules/mob/living/carbon/human/species_types/mushpeople.dm
@@ -1,8 +1,7 @@
 /datum/species/mush //mush mush codecuck
 	name = "Mushroomperson"
 	id = "mush"
-	mutant_bodyparts = list("caps")
-	default_features = list("caps" = "Round")
+	mutant_bodyparts = list("caps" = "Round")
 	changesource_flags = MIRROR_BADMIN | WABBAJACK | ERT_SPAWN
 
 	fixed_mut_color = "DBBF92"
diff --git a/code/modules/mob/living/carbon/human/species_types/synths.dm b/code/modules/mob/living/carbon/human/species_types/synths.dm
index c8477d2fbc9..8703f790cb5 100644
--- a/code/modules/mob/living/carbon/human/species_types/synths.dm
+++ b/code/modules/mob/living/carbon/human/species_types/synths.dm
@@ -66,7 +66,6 @@
 		meat = S.meat
 		mutant_bodyparts = S.mutant_bodyparts.Copy()
 		mutant_organs = S.mutant_organs.Copy()
-		default_features = S.default_features.Copy()
 		nojumpsuit = S.nojumpsuit
 		no_equip = S.no_equip.Copy()
 		limbs_id = S.limbs_id
@@ -83,7 +82,6 @@
 		attack_sound = initial(attack_sound)
 		miss_sound = initial(miss_sound)
 		mutant_bodyparts = list()
-		default_features = list()
 		nojumpsuit = initial(nojumpsuit)
 		no_equip = list()
 		qdel(fake_species)
diff --git a/code/modules/mob/living/carbon/human/species_types/vampire.dm b/code/modules/mob/living/carbon/human/species_types/vampire.dm
index a6d3c218bf6..80f15653616 100644
--- a/code/modules/mob/living/carbon/human/species_types/vampire.dm
+++ b/code/modules/mob/living/carbon/human/species_types/vampire.dm
@@ -5,7 +5,7 @@
 	species_traits = list(EYECOLOR,HAIR,FACEHAIR,LIPS,DRINKSBLOOD, HAS_FLESH, HAS_BONE)
 	inherent_traits = list(TRAIT_NOHUNGER,TRAIT_NOBREATH)
 	inherent_biotypes = MOB_UNDEAD|MOB_HUMANOID
-	default_features = list("mcolor" = "FFF", "tail_human" = "None", "ears" = "None", "wings" = "None")
+	mutant_bodyparts = list("tail_human" = "None", "ears" = "None", "wings" = "None")
 	changesource_flags = MIRROR_BADMIN | WABBAJACK | MIRROR_PRIDE | MIRROR_MAGIC | ERT_SPAWN
 	exotic_bloodtype = "U"
 	use_skintones = TRUE
diff --git a/code/modules/mob/living/emote.dm b/code/modules/mob/living/emote.dm
index af72a5b2e04..14bd2a41364 100644
--- a/code/modules/mob/living/emote.dm
+++ b/code/modules/mob/living/emote.dm
@@ -125,7 +125,7 @@
 		var/mob/living/carbon/human/H = user
 		var/open = FALSE
 		if(H.dna.features["wings"] != "None")
-			if("wingsopen" in H.dna.species.mutant_bodyparts)
+			if(H.dna.species.mutant_bodyparts["wingsopen"])
 				open = TRUE
 				H.CloseWings()
 			else
diff --git a/code/modules/surgery/organs/ears.dm b/code/modules/surgery/organs/ears.dm
index b275c0aac83..6c5a154dda8 100644
--- a/code/modules/surgery/organs/ears.dm
+++ b/code/modules/surgery/organs/ears.dm
@@ -72,11 +72,10 @@
 	..()
 	if(istype(H))
 		color = H.hair_color
-		H.dna.species.mutant_bodyparts |= "ears"
-		H.dna.features["ears"] = "Cat"
-		H.update_body()*/
+		H.dna.features["ears"] = H.dna.species.mutant_bodyparts["ears"] = "Cat"
+		H.update_body()
 
-/*/obj/item/organ/ears/cat/Remove(mob/living/carbon/human/H,  special = 0)
+/obj/item/organ/ears/cat/Remove(mob/living/carbon/human/H,  special = 0)
 	..()
 	if(istype(H))
 		color = H.hair_color
diff --git a/code/modules/surgery/organs/tails.dm b/code/modules/surgery/organs/tails.dm
index 908bc0455bf..18761fb2687 100644
--- a/code/modules/surgery/organs/tails.dm
+++ b/code/modules/surgery/organs/tails.dm
@@ -23,12 +23,12 @@
 /obj/item/organ/tail/cat/Insert(mob/living/carbon/human/H, special = 0, drop_if_replaced = TRUE)
 	..()
 	if(istype(H))
-		if(!("tail_human" in H.dna.species.mutant_bodyparts))
-			H.dna.species.mutant_bodyparts |= "tail_human"
-			H.dna.features["tail_human"] = tail_type
-			H.update_body()*/
+		var/default_part = H.dna.species.mutant_bodyparts["tail_human"]
+		if(!default_part || default_part == "None")
+			H.dna.features["tail_human"] = H.dna.species.mutant_bodyparts["tail_human"] = tail_type
+			H.update_body()
 
-/*/obj/item/organ/tail/cat/Remove(mob/living/carbon/human/H,  special = 0)
+/obj/item/organ/tail/cat/Remove(mob/living/carbon/human/H,  special = 0)
 	..()
 	if(istype(H))
 		H.dna.features["tail_human"] = "None"
@@ -55,13 +55,13 @@
 	..()
 	if(istype(H))
 		// Checks here are necessary so it wouldn't overwrite the tail of a lizard it spawned in
-		if(!("tail_lizard" in H.dna.species.mutant_bodyparts))
-			H.dna.features["tail_lizard"] = tail_type
-			H.dna.species.mutant_bodyparts |= "tail_lizard"
+		var/default_part = H.dna.species.mutant_bodyparts["tail_lizard"]
+		if(!default_part || default_part == "None")
+			H.dna.features["tail_lizard"] = H.dna.species.mutant_bodyparts["tail_lizard"] = tail_type
 
-		if(!("spines" in H.dna.species.mutant_bodyparts))
-			H.dna.features["spines"] = spines
-			H.dna.species.mutant_bodyparts |= "spines"
+		default_part = H.dna.species.mutant_bodyparts["spines"]
+		if(!default_part || default_part == "None")
+			H.dna.features["spines"] = H.dna.species.mutant_bodyparts["spines"] = spines
 		H.update_body()
 
 /obj/item/organ/tail/lizard/Remove(mob/living/carbon/human/H,  special = 0)
diff --git a/modular_skyrat/modules/customization/modules/client/preferences.dm b/modular_skyrat/modules/customization/modules/client/preferences.dm
index eb0ad61d66f..2507189c77f 100644
--- a/modular_skyrat/modules/customization/modules/client/preferences.dm
+++ b/modular_skyrat/modules/customization/modules/client/preferences.dm
@@ -2708,8 +2708,6 @@
 				gent.aroused = arousal_preview
 				gent.update_sprite_suffix()
 
-	/*if("tail_lizard" in pref_species.default_features)
-		character.dna.species.mutant_bodyparts |= "tail_lizard"*/
 	if(length(augments))
 		for(var/key in augments)
 			var/datum/augment_item/aug = GLOB.augment_items[augments[key]]
diff --git a/modular_skyrat/modules/customization/modules/mob/living/carbon/human/species.dm b/modular_skyrat/modules/customization/modules/mob/living/carbon/human/species.dm
index ccd4f0e9bbc..23a7dd33169 100644
--- a/modular_skyrat/modules/customization/modules/mob/living/carbon/human/species.dm
+++ b/modular_skyrat/modules/customization/modules/mob/living/carbon/human/species.dm
@@ -228,8 +228,6 @@
 	H.apply_overlay(BODY_FRONT_LAYER)
 
 /datum/species
-	///This holds 3 lists. Each of the list is possible colors to choose for randomization of a species, first list is primary, second secondary, third tertiary
-	default_features = null
 	///What accessories can a species have aswell as their default accessory of such type e.g. "frills" = "Aquatic". Default accessory colors is dictated by the accessory properties and mutcolors of the specie
 	var/list/default_mutant_bodyparts = list()
 
@@ -243,35 +241,28 @@
 		default_mutant_bodyparts["penis"] = "None"
 
 /datum/species/dullahan
-	default_features = null
 	mutant_bodyparts = list()
 
 /datum/species/human/felinid
-	default_features = null
 	mutant_bodyparts = list()
 	default_mutant_bodyparts = list("tail" = "Cat", "ears" = "Cat")
 
 /datum/species/human
-	default_features = null
 	mutant_bodyparts = list()
 	default_mutant_bodyparts = list("ears" = "None", "tail" = "None", "wings" = "None")
 
 /datum/species/mush
-	default_features = null
 	mutant_bodyparts = list()
 
 /datum/species/vampire
-	default_features = null
 	mutant_bodyparts = list()
 
 /datum/species/plasmaman
-	default_features = null
 	mutant_bodyparts = list()
 	can_have_genitals = FALSE
 	can_augment = FALSE
 
 /datum/species/ethereal
-	default_features = null
 	mutant_bodyparts = list()
 	can_have_genitals = FALSE
 	can_augment = FALSE
diff --git a/modular_skyrat/modules/customization/modules/mob/living/carbon/human/species/akula.dm b/modular_skyrat/modules/customization/modules/mob/living/carbon/human/species/akula.dm
index e52dd30ce51..5109b1e57ed 100644
--- a/modular_skyrat/modules/customization/modules/mob/living/carbon/human/species/akula.dm
+++ b/modular_skyrat/modules/customization/modules/mob/living/carbon/human/species/akula.dm
@@ -4,7 +4,6 @@
 	default_color = "4B4B4B"
 	species_traits = list(MUTCOLORS,EYECOLOR,LIPS,HAS_FLESH,HAS_BONE,HAIR)
 	inherent_biotypes = MOB_ORGANIC|MOB_HUMANOID
-	default_features = null
 	mutant_bodyparts = list()
 	default_mutant_bodyparts = list("tail" = ACC_RANDOM, "snout" = ACC_RANDOM, "ears" = ACC_RANDOM, "legs" = "Normal Legs")
 	attack_verb = "slash"
diff --git a/modular_skyrat/modules/customization/modules/mob/living/carbon/human/species/aquatic.dm b/modular_skyrat/modules/customization/modules/mob/living/carbon/human/species/aquatic.dm
index edbb9ede334..0d0591eb5df 100644
--- a/modular_skyrat/modules/customization/modules/mob/living/carbon/human/species/aquatic.dm
+++ b/modular_skyrat/modules/customization/modules/mob/living/carbon/human/species/aquatic.dm
@@ -4,7 +4,6 @@
 	default_color = "4B4B4B"
 	species_traits = list(MUTCOLORS,EYECOLOR,LIPS,HAS_FLESH,HAS_BONE,HAIR, FACEHAIR)
 	inherent_biotypes = MOB_ORGANIC|MOB_HUMANOID
-	default_features = null
 	mutant_bodyparts = list()
 	default_mutant_bodyparts = list("tail" = ACC_RANDOM, "snout" = ACC_RANDOM, "horns" = "None", "ears" = ACC_RANDOM, "legs" = "Normal Legs", "wings" = "None")
 	attack_verb = "slash"
diff --git a/modular_skyrat/modules/customization/modules/mob/living/carbon/human/species/humanoid.dm b/modular_skyrat/modules/customization/modules/mob/living/carbon/human/species/humanoid.dm
index de12f35ae3d..a53614b302e 100644
--- a/modular_skyrat/modules/customization/modules/mob/living/carbon/human/species/humanoid.dm
+++ b/modular_skyrat/modules/customization/modules/mob/living/carbon/human/species/humanoid.dm
@@ -4,7 +4,6 @@
 	default_color = "4B4B4B"
 	species_traits = list(MUTCOLORS,EYECOLOR,LIPS,HAS_FLESH,HAS_BONE,HAIR,FACEHAIR)
 	inherent_biotypes = MOB_ORGANIC|MOB_HUMANOID
-	default_features = null
 	mutant_bodyparts = list()
 	default_mutant_bodyparts = list("tail" = "None", "snout" = "None", "ears" = "None", "legs" = "Normal Legs", "wings" = "None", "taur" = "None", "horns" = "None")
 	changesource_flags = MIRROR_BADMIN | WABBAJACK | MIRROR_MAGIC | MIRROR_PRIDE | ERT_SPAWN | RACE_SWAP | SLIME_EXTRACT
diff --git a/modular_skyrat/modules/customization/modules/mob/living/carbon/human/species/insect.dm b/modular_skyrat/modules/customization/modules/mob/living/carbon/human/species/insect.dm
index 906264ba40c..b5551b0102c 100644
--- a/modular_skyrat/modules/customization/modules/mob/living/carbon/human/species/insect.dm
+++ b/modular_skyrat/modules/customization/modules/mob/living/carbon/human/species/insect.dm
@@ -4,7 +4,6 @@
 	default_color = "4B4B4B"
 	species_traits = list(MUTCOLORS,EYECOLOR,LIPS,HAS_FLESH,HAS_BONE,HAIR,FACEHAIR)
 	inherent_biotypes = MOB_ORGANIC|MOB_HUMANOID|MOB_BUG
-	default_features = null
 	mutant_bodyparts = list()
 	default_mutant_bodyparts = list("tail" = "None", "snout" = "None", "horns" = "None", "ears" = "None", "legs" = "Normal Legs", "taur" = "None", "wings" = "Bee", "moth_antennae" = ACC_RANDOM)
 	changesource_flags = MIRROR_BADMIN | WABBAJACK | MIRROR_MAGIC | MIRROR_PRIDE | ERT_SPAWN | RACE_SWAP | SLIME_EXTRACT
diff --git a/modular_skyrat/modules/customization/modules/mob/living/carbon/human/species/lizard.dm b/modular_skyrat/modules/customization/modules/mob/living/carbon/human/species/lizard.dm
index 4a416cb199d..20ea1e4f276 100644
--- a/modular_skyrat/modules/customization/modules/mob/living/carbon/human/species/lizard.dm
+++ b/modular_skyrat/modules/customization/modules/mob/living/carbon/human/species/lizard.dm
@@ -1,5 +1,4 @@
 /datum/species/lizard
-	default_features = null
 	mutant_bodyparts = list()
 	species_traits = list(MUTCOLORS,EYECOLOR,LIPS,HAS_FLESH,HAS_BONE,HAIR,FACEHAIR)
 	default_mutant_bodyparts = list("tail" = ACC_RANDOM, "snout" = ACC_RANDOM, "spines" = ACC_RANDOM, "frills" = ACC_RANDOM, "horns" = ACC_RANDOM, "body_markings" = ACC_RANDOM, "legs" = "Digitigrade Legs", "taur" = "None", "wings" = "None")
diff --git a/modular_skyrat/modules/customization/modules/mob/living/carbon/human/species/mammal.dm b/modular_skyrat/modules/customization/modules/mob/living/carbon/human/species/mammal.dm
index 10dacbb37d6..2b5d35ce1f3 100644
--- a/modular_skyrat/modules/customization/modules/mob/living/carbon/human/species/mammal.dm
+++ b/modular_skyrat/modules/customization/modules/mob/living/carbon/human/species/mammal.dm
@@ -4,7 +4,6 @@
 	default_color = "4B4B4B"
 	species_traits = list(MUTCOLORS,EYECOLOR,LIPS,HAS_FLESH,HAS_BONE,HAIR,FACEHAIR)
 	inherent_biotypes = MOB_ORGANIC|MOB_HUMANOID
-	default_features = null
 	mutant_bodyparts = list()
 	default_mutant_bodyparts = list("tail" = ACC_RANDOM, "snout" = ACC_RANDOM, "horns" = "None", "ears" = ACC_RANDOM, "legs" = ACC_RANDOM, "taur" = "None", "wings" = "None")
 	attack_verb = "slash"
diff --git a/modular_skyrat/modules/customization/modules/mob/living/carbon/human/species/moth.dm b/modular_skyrat/modules/customization/modules/mob/living/carbon/human/species/moth.dm
index 1ed9a966397..6d845d5d758 100644
--- a/modular_skyrat/modules/customization/modules/mob/living/carbon/human/species/moth.dm
+++ b/modular_skyrat/modules/customization/modules/mob/living/carbon/human/species/moth.dm
@@ -1,5 +1,4 @@
 /datum/species/moth
-	default_features = null
 	mutant_bodyparts = list()
 	default_mutant_bodyparts = list("wings" = ACC_RANDOM, "moth_antennae" = ACC_RANDOM)
 
diff --git a/modular_skyrat/modules/customization/modules/mob/living/carbon/human/species/robotic.dm b/modular_skyrat/modules/customization/modules/mob/living/carbon/human/species/robotic.dm
index 2b725fa7568..c1e7f1d827a 100644
--- a/modular_skyrat/modules/customization/modules/mob/living/carbon/human/species/robotic.dm
+++ b/modular_skyrat/modules/customization/modules/mob/living/carbon/human/species/robotic.dm
@@ -3,7 +3,6 @@
 	default_color = "00FF00"
 	inherent_biotypes = MOB_ROBOTIC|MOB_HUMANOID
 	inherent_traits = list(TRAIT_RADIMMUNE,TRAIT_VIRUSIMMUNE,TRAIT_NOBREATH, TRAIT_TOXIMMUNE, TRAIT_NOCLONELOSS, TRAIT_GENELESS, TRAIT_STABLEHEART,TRAIT_LIMBATTACHMENT, TRAIT_NO_HUSK, TRAIT_OXYIMMUNE)
-	default_features = null
 	mutant_bodyparts = list()
 	changesource_flags = MIRROR_BADMIN | WABBAJACK | MIRROR_MAGIC | MIRROR_PRIDE | ERT_SPAWN | RACE_SWAP | SLIME_EXTRACT
 	reagent_flags = PROCESS_SYNTHETIC
diff --git a/modular_skyrat/modules/customization/modules/mob/living/carbon/human/species/skrell.dm b/modular_skyrat/modules/customization/modules/mob/living/carbon/human/species/skrell.dm
index f0201d465ca..baa83b80958 100644
--- a/modular_skyrat/modules/customization/modules/mob/living/carbon/human/species/skrell.dm
+++ b/modular_skyrat/modules/customization/modules/mob/living/carbon/human/species/skrell.dm
@@ -4,7 +4,6 @@
 	default_color = "4B4B4B"
 	species_traits = list(MUTCOLORS,EYECOLOR,LIPS,HAS_FLESH,HAS_BONE)
 	inherent_biotypes = MOB_ORGANIC|MOB_HUMANOID
-	default_features = null
 	mutant_bodyparts = list()
 	default_mutant_bodyparts = list("skrell_hair" = ACC_RANDOM)
 	changesource_flags = MIRROR_BADMIN | WABBAJACK | MIRROR_MAGIC | MIRROR_PRIDE | ERT_SPAWN | RACE_SWAP | SLIME_EXTRACT
diff --git a/modular_skyrat/modules/customization/modules/mob/living/carbon/human/species/tajaran.dm b/modular_skyrat/modules/customization/modules/mob/living/carbon/human/species/tajaran.dm
index fc16d3256f7..4baff3a8643 100644
--- a/modular_skyrat/modules/customization/modules/mob/living/carbon/human/species/tajaran.dm
+++ b/modular_skyrat/modules/customization/modules/mob/living/carbon/human/species/tajaran.dm
@@ -4,7 +4,6 @@
 	default_color = "4B4B4B"
 	species_traits = list(MUTCOLORS,EYECOLOR,LIPS,HAS_FLESH,HAS_BONE,HAIR)
 	inherent_biotypes = MOB_ORGANIC|MOB_HUMANOID
-	default_features = null
 	mutant_bodyparts = list()
 	default_mutant_bodyparts = list("tail" = ACC_RANDOM, "snout" = ACC_RANDOM, "ears" = ACC_RANDOM, "legs" = "Normal Legs")
 	attack_verb = "slash"
diff --git a/modular_skyrat/modules/customization/modules/mob/living/carbon/human/species/unathi.dm b/modular_skyrat/modules/customization/modules/mob/living/carbon/human/species/unathi.dm
index 5de71a061c1..04fa61a6001 100644
--- a/modular_skyrat/modules/customization/modules/mob/living/carbon/human/species/unathi.dm
+++ b/modular_skyrat/modules/customization/modules/mob/living/carbon/human/species/unathi.dm
@@ -4,7 +4,6 @@
 	default_color = "4B4B4B"
 	species_traits = list(MUTCOLORS,EYECOLOR,LIPS,HAS_FLESH,HAS_BONE,HAIR)
 	inherent_biotypes = MOB_ORGANIC|MOB_HUMANOID
-	default_features = null
 	mutant_bodyparts = list()
 	default_mutant_bodyparts = list("tail" = ACC_RANDOM, "snout" = ACC_RANDOM, "spines" = "None", "frills" = "None", "horns" = ACC_RANDOM, "body_markings" = ACC_RANDOM, "legs" = "Normal Legs")
 	attack_verb = "slash"
diff --git a/modular_skyrat/modules/customization/modules/mob/living/carbon/human/species/vulpkanin.dm b/modular_skyrat/modules/customization/modules/mob/living/carbon/human/species/vulpkanin.dm
index 856f1232733..72451622d9e 100644
--- a/modular_skyrat/modules/customization/modules/mob/living/carbon/human/species/vulpkanin.dm
+++ b/modular_skyrat/modules/customization/modules/mob/living/carbon/human/species/vulpkanin.dm
@@ -4,7 +4,6 @@
 	default_color = "4B4B4B"
 	species_traits = list(MUTCOLORS,EYECOLOR,LIPS,HAS_FLESH,HAS_BONE,HAIR)
 	inherent_biotypes = MOB_ORGANIC|MOB_HUMANOID
-	default_features = null
 	mutant_bodyparts = list()
 	default_mutant_bodyparts = list("tail" = ACC_RANDOM, "snout" = ACC_RANDOM, "ears" = ACC_RANDOM, "legs" = "Normal Legs")
 	attack_verb = "slash"
diff --git a/modular_skyrat/modules/customization/modules/mob/living/carbon/human/species/xeno.dm b/modular_skyrat/modules/customization/modules/mob/living/carbon/human/species/xeno.dm
index ef2f34e38aa..58117a8b376 100644
--- a/modular_skyrat/modules/customization/modules/mob/living/carbon/human/species/xeno.dm
+++ b/modular_skyrat/modules/customization/modules/mob/living/carbon/human/species/xeno.dm
@@ -6,7 +6,6 @@
 	default_color = "00FF00"
 	species_traits = list(MUTCOLORS,EYECOLOR,LIPS,HAS_FLESH,HAS_BONE)
 	inherent_biotypes = MOB_ORGANIC|MOB_HUMANOID
-	default_features = null
 	mutant_bodyparts = list()
 	default_mutant_bodyparts = list("tail" = "Xenomorph Tail", "legs" = "Digitigrade Legs", "xenodorsal" = ACC_RANDOM, "xenohead" = ACC_RANDOM, "taur" = "None")
 	attack_verb = "slash"