Skin Masquerade: Epidermal Applicator, Lifelike Quirk, and the Skinmonger Implant (#31185)

* adds the epidermal applicator, lifelike quirk, and skinmonger traitor implant * lint * lint * attack chain fix * more linty fixes * more lint * fix some buggy bugs, synthetic skinned body parts recolor to their host * make emp on skinmonger work, fix a skinmonger bug * make bruising / denting examine text not betray the masquerade * burn away synthetic skin with acid * comment / code structure / description tweaks * i sell pharmaceuticals and pharmaceutical accessories * code review comments * oops * god damn it * god damn it (x2) * Update code/modules/surgery/organs/augments_internal.dm Co-authored-by: 1080pCat <96908085+1080pCat@users.noreply.github.com> Signed-off-by: Pooble <90473506+poobsie@users.noreply.github.com> * lower syndi level for implant * Update code/modules/research/designs/medical_designs.dm Co-authored-by: JimKil3 <47290811+JimKil3@users.noreply.github.com> Signed-off-by: Pooble <90473506+poobsie@users.noreply.github.com> * Update code/game/objects/items/tools/epidermal_applicator.dm Co-authored-by: JimKil3 <47290811+JimKil3@users.noreply.github.com> Signed-off-by: Pooble <90473506+poobsie@users.noreply.github.com> * Update code/modules/surgery/organs/organ_external.dm Co-authored-by: JimKil3 <47290811+JimKil3@users.noreply.github.com> Signed-off-by: Pooble <90473506+poobsie@users.noreply.github.com> * Update code/modules/surgery/organs/organ_external.dm Co-authored-by: JimKil3 <47290811+JimKil3@users.noreply.github.com> Signed-off-by: Pooble <90473506+poobsie@users.noreply.github.com> * tweaks for review * Update code/__DEFINES/dcs/datum_signals.dm Co-authored-by: PollardTheDragon <144391971+PollardTheDragon@users.noreply.github.com> Signed-off-by: Pooble <90473506+poobsie@users.noreply.github.com> --------- Signed-off-by: Pooble <90473506+poobsie@users.noreply.github.com> Co-authored-by: 1080pCat <96908085+1080pCat@users.noreply.github.com> Co-authored-by: JimKil3 <47290811+JimKil3@users.noreply.github.com> Co-authored-by: PollardTheDragon <144391971+PollardTheDragon@users.noreply.github.com>
2026-08-22 03:27:05 +01:00 · 2026-03-22 22:08:25 +00:00
parent 11486a2245
commit aaeb5fdf28
18 changed files with 679 additions and 8 deletions
@@ -29,6 +29,8 @@
 #define COMSIG_BODY_TRANSFER_TO "body_transfer_to"
 ///called when the mind is initialized (called every time the mob logins)
 #define COMSIG_MIND_INITIALIZE "mind_initialize"
+/// called when character creation robotic limbs are applied
+#define COMSIG_HUMAN_ROBOTIC_LIMBS_APPLIED "human_robotic_limbs_applied"

 // Sent from a surgery step when blood is being splashed. (datum/surgery, mob/user, mob/target, zone, obj/item/tool)
 #define COMSIG_SURGERY_BLOOD_SPLASH "surgery_blood_splash"
@@ -663,6 +663,16 @@
 	cost = 40
 	excludefrom = list(UPLINK_TYPE_NUCLEAR, UPLINK_TYPE_SST) //No, nukies do not get to dodge bullets.

+/datum/uplink_item/species_restricted/skinmonger
+	name = "Skinmonger Autoimplanter"
+	desc = "A strange implant that continuously fabricates synthetic epidermis, covering up prosthetics. \
+	When implanted, the Skinmonger will bond to its host, first covering every limb in synthetic skin, then replacing destroyed skin periodically. \
+	IPCs can use this implant to disguise themselves as human. However, it will not cover monitor-shaped heads."
+	reference = "SKINMON"
+	item = /obj/item/autosurgeon/organ/syndicate/oneuse/skinmonger
+	cost = 10
+	species = list("Machine")
+
 /datum/uplink_item/badass/syndiecards
 	name = "Syndicate Playing Cards"
 	desc = "A special deck of space-grade playing cards with a mono-molecular edge and metal reinforcement, making them lethal weapons both when wielded as a blade and when thrown. \
@@ -0,0 +1,209 @@
+/obj/item/epidermal_applicator
+	name = "epidermal applicator"
+	desc = "A pen-shaped device developed by Zeng-Hu Pharmaceuticals and used to apply synthetic skin to prosthetic limbs."
+	icon = 'icons/obj/surgery.dmi'
+	icon_state = "skin_applicator"
+	origin_tech = "biotech=5;materials=3;engineering=4"
+	new_attack_chain = TRUE
+
+	/// Current amount of metal stored in the applicator
+	var/metal_stored = 0
+	/// Maximum metal that can be stored
+	var/max_metal_stored = 5
+	/// Metal required per application
+	var/metal_per_use = 5
+
+	var/applying = FALSE
+
+/obj/item/epidermal_applicator/Initialize(mapload)
+	. = ..()
+	// Start with empty storage
+	metal_stored = 0
+
+/obj/item/epidermal_applicator/examine(mob/user)
+	. = ..()
+
+	if(metal_stored >= metal_per_use)
+		. += SPAN_NOTICE("It is loaded and ready to apply an epidermal layer to a body part.")
+	else
+		. += SPAN_NOTICE("It needs [metal_per_use - metal_stored] more metal sheets.")
+
+/obj/item/epidermal_applicator/proc/is_insertion_ready(mob/user)
+	if(!user)
+		return FALSE
+	return TRUE
+
+/obj/item/epidermal_applicator/item_interaction(mob/living/user, obj/item/used, list/modifiers)
+	if(!istype(used, /obj/item/stack/sheet/metal))
+		return NONE
+
+	var/space_left = max_metal_stored - metal_stored
+	if(space_left <= 0)
+		to_chat(user, SPAN_NOTICE("[src] is already full!"))
+		return ITEM_INTERACT_COMPLETE
+
+	var/obj/item/stack/sheet/metal/M = used
+	var/to_load = min(space_left, M.amount)
+	M.use(to_load)
+	metal_stored += to_load
+
+	to_chat(user, SPAN_NOTICE("You load [to_load] sheet\s of metal into [src]."))
+	return ITEM_INTERACT_COMPLETE
+
+/obj/item/epidermal_applicator/activate_self(mob/user)
+	. = ..()
+	attack(user, user, null)
+
+/obj/item/epidermal_applicator/attack(mob/living/M, mob/living/user, params)
+	. = ..(M, user, params)
+	if(.)
+		return .
+
+	if(!ishuman(M))
+		return
+
+	var/def_zone = user.zone_selected
+	if(!def_zone)
+		to_chat(user, SPAN_WARNING("You need to select a body part first!</span>"))
+		return TRUE
+
+	var/mob/living/carbon/human/target = M
+	var/obj/item/organ/external/affected = target.get_organ(def_zone)
+
+	if(!affected)
+		to_chat(user, SPAN_WARNING("[target] doesn't have a [parse_zone(def_zone)]!"))
+		return TRUE
+
+	// Show these identically so it can't be used to test whether a limb is synthetic or not.
+	if(!affected.is_robotic() || affected.has_synthetic_skin)
+		to_chat(user, SPAN_WARNING("The [affected.name] doesn't need skin."))
+		return TRUE
+
+	// Do not put skin on a monitor. No.
+	if(ismachineperson(target) && def_zone == BODY_ZONE_HEAD && affected.model)
+		var/datum/robolimb/R = GLOB.all_robolimbs[affected.model]
+		if(R && R.is_monitor)
+			to_chat(user, SPAN_WARNING("The applicator fails to find purchase on your big cube head. Probably for the best."))
+			return TRUE
+
+	// Check if we have enough metal
+	if(metal_stored < metal_per_use)
+		to_chat(user, SPAN_WARNING("[src] needs [metal_per_use] metal to function."))
+		return TRUE
+
+	if(applying)
+		to_chat(user, SPAN_WARNING("[src] is already in use!"))
+		return TRUE
+
+	// Start application process
+	apply_synthetic_skin(target, affected, user, def_zone)
+	return TRUE
+
+/obj/item/epidermal_applicator/proc/apply_synthetic_skin(mob/living/carbon/human/target, obj/item/organ/external/affected, mob/living/user, def_zone)
+	applying = TRUE
+
+	var/chosen_identity = "Unknown" // Default identity
+
+	// Ask for identity choice if applying to head
+	if(def_zone == BODY_ZONE_HEAD)
+		var/list/identity_choices = list("Unknown")
+		var/list/choice_map = list("Unknown" = "Unknown")
+
+		// Add real name option
+		if(target.dna?.real_name)
+			var/real_name_choice = "[target.dna.real_name]"
+			identity_choices += real_name_choice
+			choice_map[real_name_choice] = target.dna.real_name
+
+		// Check for offhand ID
+		var/obj/item/offhand_item = user.get_inactive_hand()
+		var/offhand_id_name = null
+		if(istype(offhand_item, /obj/item/card/id))
+			var/obj/item/card/id/id_card = offhand_item
+			offhand_id_name = id_card.registered_name
+		else if(is_pda(offhand_item))
+			var/obj/item/pda/pda = offhand_item
+			offhand_id_name = pda.owner
+
+		// Add ID name option if found
+		if(offhand_id_name && offhand_id_name != "")
+			var/id_name_choice = "[offhand_id_name]"
+			identity_choices += id_name_choice
+			choice_map[id_name_choice] = offhand_id_name
+
+		// Present choice to user
+		var/chosen_identity_option = tgui_input_list(user, "Choose facial identity:", "Identity Selection", identity_choices)
+		if(!chosen_identity_option)
+			applying = FALSE
+			return // Cancel if no choice made
+
+		chosen_identity = choice_map[chosen_identity_option]
+
+	user.visible_message(
+		SPAN_NOTICE("[user] begins applying synthetic skin to [target == user ? "their" : "[target]'s"] [affected.name] with [src]."),
+		SPAN_NOTICE("You begin applying synthetic skin to [target == user ? "your" : "[target]'s"] [affected.name]...")
+	)
+
+	// Play start sound
+	playsound(get_turf(src), 'sound/effects/spray.ogg', 50, TRUE)
+
+	// 10 second do-after
+	if(do_after(user, 10 SECONDS, target = target))
+		// Play end sound
+		playsound(get_turf(src), 'sound/effects/spray3.ogg', 50, TRUE)
+
+		// Consume metal
+		metal_stored -= metal_per_use
+
+		// Apply synthetic skin
+		affected.has_synthetic_skin = TRUE
+
+		// Apply owner skin color to synthetic skin
+		if(ishuman(target))
+			affected.synthetic_skin_colour = target.skin_colour
+
+		// Set identity if applying to head (we already got the choice above)
+		if(def_zone == BODY_ZONE_HEAD)
+			affected.synthetic_skin_identity = chosen_identity
+			if(ishuman(target))
+				target.real_name = chosen_identity
+
+		// Clear force_icon so it unsticks from the robotic sprites
+		affected.force_icon = null
+
+		// Apply to connected torso parts as well
+		if(def_zone == BODY_ZONE_CHEST)
+			var/obj/item/organ/external/groin_limb = target.bodyparts_by_name["groin"]
+			if(groin_limb && groin_limb.is_robotic() && !groin_limb.has_synthetic_skin)
+				groin_limb.has_synthetic_skin = TRUE
+				groin_limb.synthetic_skin_colour = target.skin_colour
+				groin_limb.force_icon = null
+				groin_limb.mob_icon = null
+				groin_limb.compile_icon()
+
+		if(def_zone == BODY_ZONE_PRECISE_GROIN)
+			var/obj/item/organ/external/chest_limb = target.bodyparts_by_name["chest"]
+			if(chest_limb && chest_limb.is_robotic() && !chest_limb.has_synthetic_skin)
+				chest_limb.has_synthetic_skin = TRUE
+				chest_limb.synthetic_skin_colour = target.skin_colour
+				chest_limb.force_icon = null
+				chest_limb.mob_icon = null
+				chest_limb.compile_icon()
+
+		// Force the organ to completely regenerate its mob_icon
+		affected.mob_icon = null
+		affected.compile_icon()
+
+		// Force complete body rebuild to bypass icon cache
+		target.update_body(rebuild_base = TRUE)
+		target.UpdateDamageIcon()
+
+		user.visible_message(
+			SPAN_NOTICE("[user] applies synthetic skin to [target == user ? "their" : "[target]'s"] [affected.name]."),
+			SPAN_NOTICE("You apply synthetic skin to [target == user ? "your" : "[target]'s"] [affected.name].")
+		)
+
+		if(target != user)
+			to_chat(target, SPAN_NOTICE("You feel a thin layer of synthetic skin form over your [affected.name]."))
+
+	applying = FALSE
@@ -1964,6 +1964,9 @@
 				if(status == "cybernetic")
 					I.robotize()

+	// Send signal that robotic limbs have been applied
+	SEND_SIGNAL(character, COMSIG_HUMAN_ROBOTIC_LIMBS_APPLIED)
+
 	character.dna.blood_type = b_type

 	// Wheelchair necessary?
@@ -36,6 +36,50 @@
 	trait_to_apply = TRAIT_GLUTTON
 	species_flags = QUIRK_MACHINE_INCOMPATIBLE

+/datum/quirk/lifelike
+	name = "Lifelike"
+	desc = "Your prosthetic limbs have been fitted with a synthetic epidermis, making them appear natural. \
+			For IPCs, this covers all body parts, making them look human (except monitor-shaped heads). \
+			For all others, it covers prosthetic limbs."
+	cost = 4
+
+/datum/quirk/lifelike/apply_quirk_effects(mob/living/carbon/human/target, character)
+	. = ..(target, character)
+	// Apply synthetic skin after robotic limbs are applied or the quirk doesn't work very well
+	RegisterSignal(target, COMSIG_HUMAN_ROBOTIC_LIMBS_APPLIED, PROC_REF(apply_synthetic_skin_on_signal))
+
+/datum/quirk/lifelike/proc/apply_synthetic_skin_on_signal(mob/living/carbon/human/target)
+	SIGNAL_HANDLER // COMSIG_HUMAN_ROBOTIC_LIMBS_APPLIED
+
+	for(var/obj/item/organ/external/limb as anything in target.bodyparts)
+		if(!limb)
+			continue
+
+		// Skip monitor heads
+		if(limb.limb_name == "head" && limb.model)
+			var/datum/robolimb/R = GLOB.all_robolimbs[limb.model]
+			if(R && R.is_monitor)
+				continue
+
+		if(ismachineperson(target) || limb.is_robotic())
+			limb.has_synthetic_skin = TRUE
+			// Apply owner's skin color to synthetic skin
+			limb.synthetic_skin_colour = target.skin_colour
+			// Set real identity for head
+			if(limb.limb_name == "head")
+				limb.synthetic_skin_identity = target.dna.real_name
+			// Clear cached limb icon because otherwise it's sticky
+			limb.force_icon = null
+			// Force mob icon regeneration
+			limb.mob_icon = null
+			limb.compile_icon()
+
+	// Now rebuild appearance
+	target.update_body(rebuild_base = TRUE)
+
+	// Unregister the signal since we're done with it
+	UnregisterSignal(target, COMSIG_HUMAN_ROBOTIC_LIMBS_APPLIED)
+
 /obj/item/storage/box/papersack/prepped_meal
 	name = "packed meal"
 	var/list/entree_options = list(
@@ -409,6 +409,11 @@ emp_act
 					update_hair()
 					update_fhair()

+		if(affecting.has_synthetic_skin)
+			visible_message(SPAN_WARNING("The synthetic skin on [src]'s [affecting.name] bubbles and melts away."), \
+							SPAN_WARNING("The synthetic skin on your [affecting.name] bubbles and melts away."))
+			affecting.remove_synthetic_skin(TRUE)
+
 		UpdateDamageIcon()

 	//MELTING INVENTORY ITEMS//
@@ -116,6 +116,8 @@
 	var/list/quirks = list()
 	/// The cooldown for jumping into a closet or crate
 	COOLDOWN_DECLARE(skittish_cooldown)
+	/// Cache whether or not an IPC appears human during examine to avoid needless recalculation
+	var/ipc_masquerade_status

 /mob/living/carbon/human/fake
 	flags = ABSTRACT
@@ -53,6 +53,12 @@
 			if(C.species_disguise)
 				displayed_species = C.species_disguise
 				break
+
+	// If an IPC's covered in synthetic skin, they can appear human.
+	if(calculate_ipc_masquerade_status())
+		displayed_species = "Human"
+		examine_color = "#d1aa2e"
+
 	if(skip_jumpsuit && skip_face || HAS_TRAIT(src, TRAIT_NOEXAMINE)) //either obscured or on the nospecies list
 		msg += "!"    //omit the species when examining
 	else
@@ -122,7 +128,7 @@
 				continue

 		if(!ismachineperson(src))
-			if(E.is_robotic())
+			if(E.is_robotic() && !E.has_synthetic_skin)
 				wound_flavor_text["[E.limb_name]"] = "[p_they(TRUE)] [p_have()] a robotic [E.name]!\n"

 			else if(E.status & ORGAN_SPLINTED)
@@ -256,5 +262,61 @@

 	return msg

+/mob/living/carbon/human/proc/calculate_ipc_masquerade_status()
+	if(!ismachineperson(src))
+		return FALSE
+
+	var/all_visible_parts_have_skin = TRUE
+
+	for(var/obj/item/organ/external/limb as anything in bodyparts)
+		if(!limb || !limb.is_robotic())
+			continue
+
+		// If it's covered by clothing then it doesn't need to have skin for the masquerade
+		if(is_bodypart_covered_by_clothing(limb.limb_name))
+			continue
+
+		if(!limb.has_synthetic_skin)
+			return FALSE
+
+	return all_visible_parts_have_skin
+
 /mob/living/carbon/human/examine_get_brute_message()
-	return !ismachineperson(src) ? "bruising" : "denting"
+	if(!ismachineperson(src) || calculate_ipc_masquerade_status())
+		return "bruising"
+
+	return "denting"
+
+/// Checks if a body part is covered by clothing
+/mob/living/carbon/human/proc/is_bodypart_covered_by_clothing(part_name)
+	var/bodypart_clothing_bitflag = bodypart_name_to_clothing_bitflag(part_name)
+	if(!bodypart_clothing_bitflag)
+		return FALSE
+
+	// Masks
+	if(bodypart_clothing_bitflag & HEAD)
+		var/obj/item/clothing/mask/current_mask = wear_mask
+		if(istype(current_mask) && (current_mask.body_parts_covered & bodypart_clothing_bitflag))
+			return TRUE
+
+	// Jumpsuit/uniform
+	var/chest_groin_arms_legs_bitflag = ARMS | LEGS | UPPER_TORSO | LOWER_TORSO
+	if(bodypart_clothing_bitflag & chest_groin_arms_legs_bitflag)
+		if(w_uniform && (w_uniform.body_parts_covered & bodypart_clothing_bitflag))
+			return TRUE
+		if(wear_suit && (wear_suit.body_parts_covered & bodypart_clothing_bitflag))
+			return TRUE
+
+	// Gloves
+	if(bodypart_clothing_bitflag & HANDS)
+		var/obj/item/clothing/gloves/current_gloves = gloves
+		if(istype(current_gloves) && (current_gloves.body_parts_covered & bodypart_clothing_bitflag))
+			return TRUE
+
+	// Shoes
+	if(bodypart_clothing_bitflag & FEET)
+		var/obj/item/clothing/shoes/current_shoes = shoes
+		if(istype(current_shoes) && (current_shoes.body_parts_covered & bodypart_clothing_bitflag))
+			return TRUE
+
+	return FALSE
@@ -198,6 +198,8 @@ GLOBAL_LIST_EMPTY(damage_icon_parts)
 		base_icon = chest.get_icon(skeleton)

 		for(var/obj/item/organ/external/part in bodyparts)
+			part.sync_colour_to_human(src)
+
 			// We just drew the chest, don't draw it twice.
 			if(part == chest)
 				continue
@@ -348,6 +348,16 @@
 		if(istype(affecting))
 			affecting.disfigure()

+	var/was_skin_removed = FALSE
+	for(var/obj/item/organ/external/limb in H.bodyparts)
+		if(limb.has_synthetic_skin)
+			was_skin_removed = TRUE
+			limb.remove_synthetic_skin(TRUE)
+
+	if(was_skin_removed)
+		H.visible_message("<span class='warning'>The synthetic skin on [H]'s body bubbles and melts away.</span>", \
+						"<span class='warning'>The synthetic skin on your body bubbles and melts away.</span>")
+
 /datum/reagent/acid/reaction_obj(obj/O, volume)
 	if(ismob(O.loc)) //handled in human acid_act()
 		return
@@ -71,6 +71,16 @@
 	build_path = /obj/item/reagent_containers/applicator
 	category = list("Medical")

+/datum/design/epidermal_applicator
+	name = "Epidermal Applicator"
+	desc = "A pen-shaped device developed by Zeng-Hu Pharmaceuticals and used to apply synthetic skin to prosthetic limbs."
+	id = "epidermal_applicator"
+	req_tech = list("biotech" = 5, "materials" = 6, "engineering" = 4)
+	build_type = PROTOLATHE
+	materials = list(MAT_METAL = 2000, MAT_GLASS = 1000, MAT_SILVER = 500)
+	build_path = /obj/item/epidermal_applicator
+	category = list("Medical")
+
 /datum/design/handheld_defib
 	name = "Handheld Defibrillator"
 	desc = "A smaller defibrillator only capable of treating cardiac arrest."
@@ -1094,6 +1094,182 @@
 	REMOVE_TRAIT(M, TRAIT_IPC_CAN_EAT, "ipc_food[UID()]")
 	return ..()

+/obj/item/organ/internal/cyberimp/chest/skinmonger
+	name = "\improper Skinmonger"
+	desc = "A strange implant that continuously produces and replaces synthetic skin. \
+			Will not apply skin to a monitor-shaped head."
+	implant_color = "#FFDDAA"
+	slot = "chest_synthetic_skin"
+	w_class = WEIGHT_CLASS_TINY
+	origin_tech = "materials=6;biotech=7;syndicate=1"
+	augment_icon = "nutripump"
+	/// Whether regeneration is allowed. This is disabled temporarily by an EMP
+	var/regeneration_active = TRUE
+	/// How long to wait after finding a target body part to replace skin on
+	var/regen_cooldown = 30 SECONDS
+	/// Whether we're currently regenerating
+	var/regenerating = FALSE
+	/// Normally synthetic skin doesn't have memory of the identity we're disguised as. This implant does, though
+	var/configured_identity = "Unknown"
+	/// Flag for tracking if we've used up the implant's initial deployment of skin
+	var/initial_surge_used = FALSE
+
+/obj/item/organ/internal/cyberimp/chest/skinmonger/insert(mob/living/carbon/M, special = 0)
+	. = ..()
+
+	if(!initial_surge_used)
+		apply_full_synthetic_skin(M)
+		to_chat(M, SPAN_WARNING("In an instant, a surge of skin wraps around you and binds itself to your body!"))
+		playsound(M, 'sound/surgery/organ2.ogg', 70, TRUE, frequency = 0.8)
+		initial_surge_used = TRUE
+
+/obj/item/organ/internal/cyberimp/chest/skinmonger/remove(mob/living/carbon/M, special = 0)
+	. = ..()
+	regenerating = FALSE
+	remove_all_synthetic_skin(M)
+
+// Called when synthetic skin is removed from any part - starts regeneration cycle
+/obj/item/organ/internal/cyberimp/chest/skinmonger/proc/start_regeneration()
+	if(!regeneration_active || regenerating)
+		return
+
+	regenerating = TRUE
+	// Wait before we trigger the first regen.
+	addtimer(CALLBACK(src, PROC_REF(regenerate_next_part)), regen_cooldown)
+
+/obj/item/organ/internal/cyberimp/chest/skinmonger/proc/regenerate_next_part()
+	if(!owner || !regeneration_active || !regenerating)
+		return
+
+	var/mob/living/carbon/human/H = owner
+	var/list/unskinned_parts = list()
+
+	// Find all robotic parts without synthetic skin.
+	for(var/obj/item/organ/external/E in H.bodyparts)
+		if(!E.is_robotic() || E.has_synthetic_skin)
+			continue
+
+		// Skip monitor heads
+		if(E.limb_name == "head" && E.model)
+			var/datum/robolimb/R = GLOB.all_robolimbs[E.model]
+			if(R && R.is_monitor)
+				continue
+
+		unskinned_parts += E
+
+	// If no parts need skin, kill the regen cycle
+	if(!length(unskinned_parts))
+		regenerating = FALSE
+		return
+
+	// Pick a random part and apply skin
+	var/obj/item/organ/external/chosen_part = pick(unskinned_parts)
+	chosen_part.has_synthetic_skin = TRUE
+	// Apply owner's skin color to synthetic skin
+	if(ishuman(H))
+		chosen_part.synthetic_skin_colour = H.skin_colour
+	// Set identity for head regeneration
+	if(chosen_part.limb_name == "head")
+		var/identity_to_use = configured_identity
+		chosen_part.synthetic_skin_identity = identity_to_use
+		if(ishuman(H))
+			H.real_name = identity_to_use
+
+	// Chest and lower body tied together for regeneration
+	if(chosen_part.limb_name == "chest")
+		var/obj/item/organ/external/groin_limb = H.bodyparts_by_name["groin"]
+		if(groin_limb && groin_limb.is_robotic() && !groin_limb.has_synthetic_skin)
+			groin_limb.has_synthetic_skin = TRUE
+			groin_limb.synthetic_skin_colour = H.skin_colour
+			groin_limb.force_icon = null
+			groin_limb.mob_icon = null
+			groin_limb.compile_icon()
+
+	if(chosen_part.limb_name == "groin")
+		var/obj/item/organ/external/chest_limb = H.bodyparts_by_name["chest"]
+		if(chest_limb && chest_limb.is_robotic() && !chest_limb.has_synthetic_skin)
+			chest_limb.has_synthetic_skin = TRUE
+			chest_limb.synthetic_skin_colour = H.skin_colour
+			chest_limb.force_icon = null
+			chest_limb.mob_icon = null
+			chest_limb.compile_icon()
+
+	// Refresh sprite
+	chosen_part.force_icon = null
+	chosen_part.mob_icon = null
+	chosen_part.compile_icon()
+	H.update_body(rebuild_base = TRUE)
+
+	to_chat(H, SPAN_NOTICE("You feel a wave of synthetic skin gush forth and bind to your [chosen_part.name]."))
+
+	// Schedule next regeneration if more parts need skin. Otherwise, we're done
+	if(length(unskinned_parts) > 1)
+		addtimer(CALLBACK(src, PROC_REF(regenerate_next_part)), regen_cooldown)
+	else
+		regenerating = FALSE
+
+// One-time application of skin across the entire chassis when the implant is inserted.
+/obj/item/organ/internal/cyberimp/chest/skinmonger/proc/apply_full_synthetic_skin(mob/living/carbon/human/target)
+	if(!ishuman(target))
+		return
+
+	var/mob/living/carbon/human/H = target
+	var/head_skinned = FALSE
+	for(var/obj/item/organ/external/E in H.bodyparts)
+		if(!E.is_robotic() || E.has_synthetic_skin)
+			continue
+
+		// Skip monitor heads
+		if(E.limb_name == "head" && E.model)
+			var/datum/robolimb/R = GLOB.all_robolimbs[E.model]
+			if(R && R.is_monitor)
+				continue
+
+		E.has_synthetic_skin = TRUE
+		// Apply owner's skin color to synthetic skin
+		E.synthetic_skin_colour = H.skin_colour
+		// Set configured identity for head
+		if(E.limb_name == "head")
+			E.synthetic_skin_identity = configured_identity
+			head_skinned = TRUE
+		// Clear sprite cache
+		E.force_icon = null
+		E.mob_icon = null
+		E.compile_icon()
+
+	// Apply facial identity if head was skinned
+	if(head_skinned)
+		H.real_name = configured_identity
+
+	H.update_body(rebuild_base = TRUE)
+
+/obj/item/organ/internal/cyberimp/chest/skinmonger/proc/remove_all_synthetic_skin(mob/living/carbon/human/target)
+	if(!ishuman(target))
+		return
+
+	var/mob/living/carbon/human/H = target
+	for(var/obj/item/organ/external/E in H.bodyparts)
+		if(E.is_robotic() && E.has_synthetic_skin)
+			E.remove_synthetic_skin(silent = TRUE) // silent because it spams the user otherwise
+
+	to_chat(H, SPAN_WARNING("You feel your synthetic skin melt away."))
+	H.update_body(rebuild_base = TRUE)
+
+// EMP wipes all synthetic skin and puts the implant on cooldown
+/obj/item/organ/internal/cyberimp/chest/skinmonger/emp_act(severity)
+	. = ..()
+
+	regenerating = FALSE
+	regeneration_active = FALSE
+	remove_all_synthetic_skin(owner)
+
+	addtimer(CALLBACK(src, PROC_REF(restart_regeneration)), regen_cooldown)
+
+/obj/item/organ/internal/cyberimp/chest/skinmonger/proc/restart_regeneration()
+	if(owner)
+		regeneration_active = TRUE
+		start_regeneration()
+
 //BOX O' IMPLANTS

 /obj/item/storage/box/cyber_implants
@@ -190,4 +190,44 @@
 /obj/item/autosurgeon/organ/syndicate/oneuse/syndie_mantis/l
 	starting_organ = /obj/item/organ/internal/cyberimp/arm/syndie_mantis/l

+/obj/item/autosurgeon/organ/syndicate/oneuse/skinmonger
+	starting_organ = /obj/item/organ/internal/cyberimp/chest/skinmonger
+
+/obj/item/autosurgeon/organ/syndicate/oneuse/skinmonger/attack_self__legacy__attackchain(mob/user)
+	if(!storedorgan)
+		return ..()
+
+	// Configure identity before implantation...
+	var/obj/item/organ/internal/cyberimp/chest/skinmonger/implant = storedorgan
+
+	// Check if they have a monitor head
+	var/has_monitor_head = FALSE
+	if(ishuman(user))
+		var/mob/living/carbon/human/H = user
+		var/obj/item/organ/external/head/head_organ = H.bodyparts_by_name["head"]
+		if(head_organ?.model)
+			var/datum/robolimb/R = GLOB.all_robolimbs[head_organ.model]
+			if(R?.is_monitor)
+				has_monitor_head = TRUE
+				to_chat(user, SPAN_WARNING("The Skinmonger is confused by your freakishly large head, but attempts to disguise you anyway."))
+
+	// Only ask for identity if they're a machine person and don't have a monitor head
+	if(ismachineperson(user) && !has_monitor_head)
+		if(!implant.configured_identity || implant.configured_identity == "Unknown")
+			var/chosen_name = tgui_input_text(user, "The Skinmonger generously offers to turn you into someone else. But who?", default = "Unknown", max_length = MAX_NAME_LEN)
+			if(!chosen_name)
+				return
+
+			// Allow to appear as "Unknown" (default value)
+			if(chosen_name != "Unknown")
+				chosen_name = reject_bad_name(chosen_name, max_length = MAX_NAME_LEN)
+				if(!chosen_name)
+					to_chat(user, SPAN_WARNING("The implanter quietly hisses, rejecting your choice."))
+					return
+
+			implant.configured_identity = chosen_name
+
+	// ... then implant
+	return ..()
+
 #undef INFINITE
@@ -64,6 +64,12 @@
 	var/fragile = FALSE
 	///The level of false skin used to cover robotic organs on the limb. Updated when too damaged, when installed, or when an organ with it is installed.
 	var/augmented_skin_cover_level = 0
+	/// Whether this robotic limb has synthetic skin applied
+	var/has_synthetic_skin = FALSE
+	/// Stored facial identity for synthetic skin (head only)
+	var/synthetic_skin_identity = null
+	/// Stored skin color for synthetic skin
+	var/synthetic_skin_colour = null

 // When the limb is not on a person, make sure it faces south so it's always visible.
 /obj/item/organ/external/setDir()
@@ -317,6 +323,10 @@
 				droplimb(1) //Clean loss, just drop the limb and be done

 	var/mob/living/carbon/owner_old = owner //Need to update health, but need a reference in case the below check cuts off a limb.
+
+	// Check if synthetic skin should be removed from damage
+	check_synthetic_skin_damage()
+
 	//If limb took enough damage, try to cut or tear it off
 	if(owner)
 		if(sharp && !(limb_flags & CANNOT_DISMEMBER))
@@ -578,7 +588,68 @@ Note that amputating the affected organ does in fact remove the infection from t
 	if((brute_dam >= max_damage * (augmented_skin_cover_level / 3) && brute) || (burn_dam >= max_damage * (augmented_skin_cover_level / 3) && burn)) // 66% for level 2, 100% for level 3
 		break_augmented_skin()

-// new damage icon system
+/obj/item/organ/external/proc/check_synthetic_skin_damage()
+	if(!has_synthetic_skin || !is_robotic())
+		return
+
+	var/damage_percentage = (brute_dam + burn_dam) / max_damage
+	if(damage_percentage >= 0.8)
+		remove_synthetic_skin()
+
+	// Upper body and lower body are tied together
+	check_connected_limb_skin_damage()
+
+// Chest and lower body are tied together with synthetic skin.
+/obj/item/organ/external/proc/check_connected_limb_skin_damage()
+	if(!owner || !has_synthetic_skin)
+		return
+
+	if(limb_name == "chest")
+		var/damage_percentage = (brute_dam + burn_dam) / max_damage
+		if(damage_percentage >= 0.8)
+			var/obj/item/organ/external/groin_limb = owner.bodyparts_by_name["groin"]
+			if(groin_limb?.has_synthetic_skin)
+				groin_limb.remove_synthetic_skin()
+
+	if(limb_name == "groin")
+		var/damage_percentage = (brute_dam + burn_dam) / max_damage
+		if(damage_percentage >= 0.8)
+			var/obj/item/organ/external/chest_limb = owner.bodyparts_by_name["chest"]
+			if(chest_limb?.has_synthetic_skin)
+				chest_limb.remove_synthetic_skin()
+
+/obj/item/organ/external/proc/remove_synthetic_skin(silent = FALSE)
+	if(!has_synthetic_skin)
+		return
+
+	has_synthetic_skin = FALSE
+
+	// Restore original identity if this is a head
+	if(limb_name == "head" && owner && ishuman(owner))
+		var/mob/living/carbon/human/H = owner
+		synthetic_skin_identity = null
+		H.real_name = H.dna.real_name
+
+	// Restore original robotic appearance
+	if(model)
+		var/datum/robolimb/R = GLOB.all_robolimbs[model]
+		if(R)
+			force_icon = R.icon
+
+	if(ishuman(owner))
+		var/mob/living/carbon/human/H = owner
+		if(!silent)
+			to_chat(H, SPAN_WARNING("The synthetic skin on your [name] is destroyed!"))
+		// Force the sprite to update
+		mob_icon = null
+		compile_icon()
+		H.update_body(rebuild_base = TRUE)
+		H.UpdateDamageIcon()
+
+		var/obj/item/organ/internal/cyberimp/chest/skinmonger/regen = H.get_int_organ(/obj/item/organ/internal/cyberimp/chest/skinmonger)
+		if(regen)
+			regen.start_regeneration()
+
 // returns just the brute/burn damage code
 /obj/item/organ/external/proc/damage_state_text()
 	var/tburn = 0
@@ -627,6 +698,14 @@ Note that amputating the affected organ does in fact remove the infection from t
 	if(limb_flags & CANNOT_DISMEMBER || !owner)
 		return

+	// Loose limbs should not have any synthetic skin
+	if(has_synthetic_skin)
+		remove_synthetic_skin()
+	if(children)
+		for(var/obj/item/organ/external/child in children)
+			if(child.has_synthetic_skin)
+				child.remove_synthetic_skin()
+
 	if(HAS_TRAIT(owner, TRAIT_I_WANT_BRAINS) && !clean)
 		fracture()
 		return
@@ -23,6 +23,10 @@

 /obj/item/organ/external/proc/sync_colour_to_human(mob/living/carbon/human/H)
 	if(is_robotic() && !istype(dna.species, /datum/species/machine)) //machine people get skin color
+		// For robotic parts with synthetic skin, use stored synthetic skin color
+		if(has_synthetic_skin && synthetic_skin_colour)
+			s_col = synthetic_skin_colour
+			s_tone = null
 		return
 	if(dna.species && H.dna.species && dna.species.name != H.dna.species.name)
 		return
@@ -67,7 +71,7 @@
 		var/icon_file = new_icons[1]
 		var/new_icon_state = new_icons[2]
 		mob_icon = new /icon(icon_file, new_icon_state)
-		if(!skeletal && !is_robotic())
+		if(!skeletal && (!is_robotic() || (is_robotic() && has_synthetic_skin)))
 			if(status & ORGAN_DEAD)
 				mob_icon.ColorTone(COLORTONE_DEAD_EXT_ORGAN)
 				mob_icon.SetIntensity(0.7)
@@ -169,8 +173,10 @@

 		if(skeletal)
 			icon_file = 'icons/mob/human_races/r_skeleton.dmi'
-		else if(is_robotic())
+		else if(is_robotic() && !has_synthetic_skin)
 			icon_file = 'icons/mob/human_races/robotic.dmi'
+		else if(has_synthetic_skin && dna.species && istype(dna.species, /datum/species/machine))
+			icon_file = 'icons/mob/human_races/r_human.dmi'
 		else
 			// Congratulations, you are normal
 			icon_file = icobase
@@ -787,11 +787,21 @@

 	var/new_gender = gender_list[gender_key]
 	var/old_name = target.real_name
-	target.real_name = new_name
+	var/identity_type = "core identity parameters"
+
+	// Prioritize replacing a synthetic skin identity over the IPC's actual identity
+	var/obj/item/organ/external/head = target.bodyparts_by_name["head"]
+	if(head && head.has_synthetic_skin)
+		head.synthetic_skin_identity = new_name
+		target.real_name = new_name
+		identity_type = "synthetic facial identity"
+	else
+		target.real_name = new_name
+
 	target.gender = new_gender
 	user.visible_message(
-		SPAN_NOTICE("[user] edits [old_name]'s identity parameters with [tool]; [target.p_they()] [target.p_are()] now known as [new_name]."),
-		SPAN_NOTICE("You alter [old_name]'s identity parameters with [tool]; [target.p_they()] [target.p_are()] now known as [new_name]."),
+		SPAN_NOTICE("[user] edits [old_name]'s [identity_type] with [tool]; [target.p_they()] [target.p_are()] now known as [new_name]."),
+		SPAN_NOTICE("You alter [old_name]'s [identity_type] with [tool]; [target.p_they()] [target.p_are()] now known as [new_name]."),
 		chat_message_type = MESSAGE_TYPE_COMBAT
 		)

@@ -1445,6 +1445,7 @@
 #include "code\game\objects\items\tanks\tank_types.dm"
 #include "code\game\objects\items\tanks\watertank.dm"
 #include "code\game\objects\items\tools\crowbar.dm"
+#include "code\game\objects\items\tools\epidermal_applicator.dm"
 #include "code\game\objects\items\tools\hammer.dm"
 #include "code\game\objects\items\tools\multitool.dm"
 #include "code\game\objects\items\tools\screwdriver.dm"