diff --git a/code/__HELPERS/mobs.dm b/code/__HELPERS/mobs.dm
index 3a763818771b6..96bba3a97a2dd 100644
--- a/code/__HELPERS/mobs.dm
+++ b/code/__HELPERS/mobs.dm
@@ -775,6 +775,25 @@ GLOBAL_DATUM_INIT(dview_mob, /mob/dview, new)
 		return TRUE
 	return FALSE
 
+/// Special handler for cyborg naming to check if cyborg name preferences match a name that has already been used. Returns TRUE if preferences are good to use and FALSE if not.
+/mob/proc/check_cyborg_name(client/C, obj/item/mmi/mmi)
+	var/name = C?.prefs?.read_character_preference(/datum/preference/name/cyborg)
+
+	//Name is original, add it to the list to prevent it from being used again and return TRUE
+	if(!(name in GLOB.cyborg_name_list))
+		GLOB.cyborg_name_list += name
+		mmi.original_name = name
+		return TRUE
+
+	//Name is not original, but is this the original user of the name? If so we still return TRUE but do not need to add it to the list
+	else if(name == mmi.original_name)
+		return TRUE
+
+	//This name has already been taken and this is not the original user, return FALSE
+	else
+		to_chat(C.mob, "<span class='warning'>Cyborg name already used this round by another character, your name has been randomized</span>")
+		return FALSE
+
 /proc/view_or_range(distance = world.view , center = usr , type)
 	switch(type)
 		if("view")
diff --git a/code/_globalvars/lists/mobs.dm b/code/_globalvars/lists/mobs.dm
index 73b9a2c418b4a..4daa7b969bfd6 100644
--- a/code/_globalvars/lists/mobs.dm
+++ b/code/_globalvars/lists/mobs.dm
@@ -52,7 +52,7 @@ GLOBAL_LIST_EMPTY(mob_config_movespeed_type_lookup)
 
 GLOBAL_LIST_EMPTY(emote_list)
 
-GLOBAL_LIST_EMPTY(posi_key_list)
+GLOBAL_LIST_EMPTY(cyborg_name_list)
 
 GLOBAL_LIST_INIT(construct_radial_images, list(
 	CONSTRUCT_JUGGERNAUT = image(icon = 'icons/mob/cult.dmi', icon_state = "juggernaut"),
diff --git a/code/modules/jobs/job_types/_job.dm b/code/modules/jobs/job_types/_job.dm
index 39545f1901143..7f4ca8766fdcc 100644
--- a/code/modules/jobs/job_types/_job.dm
+++ b/code/modules/jobs/job_types/_job.dm
@@ -504,5 +504,5 @@
 			mmi.brainmob.real_name = organic_name //the name of the brain inside the cyborg is the robotized human's name.
 			mmi.brainmob.name = organic_name
 	// If this checks fails, then the name will have been handled during initialization.
-	if(player_client.prefs.read_character_preference(/datum/preference/name/cyborg) != DEFAULT_CYBORG_NAME)
+	if(player_client.prefs.read_character_preference(/datum/preference/name/cyborg) != DEFAULT_CYBORG_NAME && check_cyborg_name(player_client, mmi))
 		apply_pref_name(/datum/preference/name/cyborg, player_client)
diff --git a/code/modules/mob/living/brain/MMI.dm b/code/modules/mob/living/brain/MMI.dm
index 143c013c4aefa..3c44231a81026 100644
--- a/code/modules/mob/living/brain/MMI.dm
+++ b/code/modules/mob/living/brain/MMI.dm
@@ -13,6 +13,8 @@
 	var/datum/ai_laws/laws = new()
 	var/force_replace_ai_name = FALSE
 	var/overrides_aicore_laws = FALSE // Whether the laws on the MMI, if any, override possible pre-existing laws loaded on the AI core.
+	///Used to reserve an "original" cyborg name. When this mmi first becomes a cyborg, their name will be stored here in case of deconstruction.
+	var/original_name
 
 /obj/item/mmi/Initialize(mapload)
 	. = ..()
diff --git a/code/modules/mob/living/brain/posibrain.dm b/code/modules/mob/living/brain/posibrain.dm
index 826fade383784..4fba144a59161 100644
--- a/code/modules/mob/living/brain/posibrain.dm
+++ b/code/modules/mob/living/brain/posibrain.dm
@@ -94,9 +94,6 @@ GLOBAL_VAR(posibrain_notify_cooldown)
 		return FALSE
 	if(is_occupied() || QDELETED(brainmob) || QDELETED(src) || QDELETED(user))
 		return FALSE
-	if(user.ckey in GLOB.posi_key_list)
-		to_chat(user, "<span class='warning'>Positronic brain spawns limited to 1 per round.</span>")
-		return FALSE
 	if(!(GLOB.ghost_role_flags & GHOSTROLE_SILICONS))
 		to_chat(user, "<span class='warning'>Central Command has temporarily outlawed posibrain sentience in this sector...</span>")
 		return FALSE
@@ -108,9 +105,7 @@ GLOBAL_VAR(posibrain_notify_cooldown)
 		return FALSE
 	if(brainmob.suiciding) //clear suicide status if the old occupant suicided.
 		brainmob.set_suicide(FALSE)
-	var/ckey = user.ckey
-	if(transfer_personality(user))
-		GLOB.posi_key_list += ckey
+	transfer_personality(user)
 
 	var/datum/job/posibrain/pj = SSjob.GetJob(JOB_NAME_POSIBRAIN)
 	pj.remove_posi_slot(src)
diff --git a/code/modules/mob/living/silicon/robot/robot.dm b/code/modules/mob/living/silicon/robot/robot.dm
index 39a1031d85993..b5152215a9b0a 100644
--- a/code/modules/mob/living/silicon/robot/robot.dm
+++ b/code/modules/mob/living/silicon/robot/robot.dm
@@ -297,8 +297,12 @@
 	if(custom_name)
 		changed_name = custom_name
 	if(changed_name == "" && C && C.prefs.read_character_preference(/datum/preference/name/cyborg) != DEFAULT_CYBORG_NAME)
-		if(apply_pref_name(/datum/preference/name/cyborg, C))
-			return //built in camera handled in proc
+		if(check_cyborg_name(C, mmi))
+			if(apply_pref_name(/datum/preference/name/cyborg, C))
+				return //built in camera handled in proc
+		else
+			//Failed the vibe check on name theft, time to randomize it
+			changed_name = get_standard_name()
 	if(!changed_name)
 		changed_name = get_standard_name()