diff --git a/code/modules/organs/external/_external.dm b/code/modules/organs/external/_external.dm
index 8ca1b7f233d3c..95a71c0f6219f 100644
--- a/code/modules/organs/external/_external.dm
+++ b/code/modules/organs/external/_external.dm
@@ -91,8 +91,8 @@
 	if(get_fingerprint())
 		A.add_partial_print(get_fingerprint())
 
-/obj/item/organ/external/New(mob/living/carbon/holder)
-	..()
+/obj/item/organ/external/Initialize()
+	. = ..()
 	if(isnull(pain_disability_threshold))
 		pain_disability_threshold = (max_damage * 0.75)
 	if(owner)
diff --git a/code/modules/organs/external/stump.dm b/code/modules/organs/external/stump.dm
index 8e931e0a2cb8e..c3f7762c74931 100644
--- a/code/modules/organs/external/stump.dm
+++ b/code/modules/organs/external/stump.dm
@@ -3,7 +3,7 @@
 	icon_name = ""
 	dislocated = -1
 
-/obj/item/organ/external/stump/New(mob/living/carbon/holder, internal, obj/item/organ/external/limb)
+/obj/item/organ/external/stump/Initialize(mapload, internal, obj/item/organ/external/limb)
 	if(istype(limb))
 		SetName("stump of \a [limb.name]")
 		organ_tag = limb.organ_tag
@@ -13,7 +13,7 @@
 		parent_organ = limb.parent_organ
 		artery_name = "mangled [limb.artery_name]"
 		arterial_bleed_severity = limb.arterial_bleed_severity
-	..(holder, internal)
+	. = ..(loc, internal)
 	if(istype(limb))
 		max_damage = limb.max_damage
 		if(BP_IS_ROBOTIC(limb) && (!parent || BP_IS_ROBOTIC(parent)))
diff --git a/code/modules/organs/internal/_internal.dm b/code/modules/organs/internal/_internal.dm
index 42ebfd2c1186f..9ece1ae690fb5 100644
--- a/code/modules/organs/internal/_internal.dm
+++ b/code/modules/organs/internal/_internal.dm
@@ -8,19 +8,18 @@
 	var/min_bruised_damage = 10       // Damage before considered bruised
 	var/damage_reduction = 0.5     //modifier for internal organ injury
 
-/obj/item/organ/internal/New(mob/living/carbon/holder)
+/obj/item/organ/internal/Initialize()
 	if(max_damage)
 		min_bruised_damage = floor(max_damage / 4)
-	..()
-	if(istype(holder) && !istype(src, /obj/item/organ/internal/augment))
+	. = ..()
+	if(iscarbon(loc) && !istype(src, /obj/item/organ/internal/augment))
+		var/mob/living/carbon/human/holder = loc
 		holder.internal_organs |= src
-
-		var/mob/living/carbon/human/H = holder
-		if(istype(H))
-			var/obj/item/organ/external/E = H.get_organ(parent_organ)
-			if(!E)
+		if(ishuman(holder))
+			var/obj/item/organ/external/external = holder.get_organ(parent_organ)
+			if(!external)
 				CRASH("[src] spawned in [holder] without a parent organ: [parent_organ].")
-			E.internal_organs |= src
+			external.internal_organs |= src
 
 /obj/item/organ/internal/Destroy()
 	if(owner)
diff --git a/code/modules/organs/internal/brain.dm b/code/modules/organs/internal/brain.dm
index 533edc1b9b4cb..6365a7c49f93b 100644
--- a/code/modules/organs/internal/brain.dm
+++ b/code/modules/organs/internal/brain.dm
@@ -43,8 +43,8 @@
 	. = ..()
 	icon_state = "brain-prosthetic"
 
-/obj/item/organ/internal/brain/New(mob/living/carbon/holder)
-	..()
+/obj/item/organ/internal/brain/Initialize()
+	. = ..()
 	if(species)
 		set_max_damage(species.total_health)
 	else
diff --git a/code/modules/organs/internal/eyes.dm b/code/modules/organs/internal/eyes.dm
index 62789bf392add..aca3e1a51353f 100644
--- a/code/modules/organs/internal/eyes.dm
+++ b/code/modules/organs/internal/eyes.dm
@@ -85,8 +85,8 @@
 	if(is_broken())
 		owner.eye_blind = 20
 
-/obj/item/organ/internal/eyes/New()
-	..()
+/obj/item/organ/internal/eyes/Initialize()
+	. = ..()
 	flash_mod = species.flash_mod
 	darksight_range = species.darksight_range
 	darksight_tint = species.darksight_tint
@@ -101,8 +101,8 @@
 	name = "optical sensor"
 	status = ORGAN_ROBOTIC
 
-/obj/item/organ/internal/eyes/robot/New()
-	..()
+/obj/item/organ/internal/eyes/robot/Initialize()
+	. = ..()
 	robotize()
 
 /obj/item/organ/internal/eyes/robotize()
diff --git a/code/modules/organs/internal/species/fbp.dm b/code/modules/organs/internal/species/fbp.dm
index 54e028196cdf6..6bb48c53ef14a 100644
--- a/code/modules/organs/internal/species/fbp.dm
+++ b/code/modules/organs/internal/species/fbp.dm
@@ -12,11 +12,11 @@
 	//at 0.26 completely depleted after 60ish minutes of constant walking or 130 minutes of standing still
 	var/servo_cost = 0.26
 
-/obj/item/organ/internal/cell/New()
+/obj/item/organ/internal/cell/Initialize()
+	. = ..()
 	robotize()
 	if(ispath(cell))
 		cell = new cell(src)
-	..()
 
 /obj/item/organ/internal/cell/proc/percent()
 	if(!cell)
@@ -120,12 +120,16 @@
 	stored_mmi = null
 	return ..()
 
-/obj/item/organ/internal/mmi_holder/New(mob/living/carbon/human/new_owner, internal)
-	..(new_owner, internal)
+/obj/item/organ/internal/mmi_holder/Initialize()
+	. = ..()
 	if(!stored_mmi)
 		stored_mmi = new(src)
-	sleep(-1)
+	return INITIALIZE_HINT_LATELOAD
+
+/obj/item/organ/internal/mmi_holder/LateInitialize()
 	update_from_mmi()
+	if (!owner)
+		return
 	persistantMind = owner.mind
 	ownerckey = owner.ckey
 
diff --git a/code/modules/organs/internal/species/ipc.dm b/code/modules/organs/internal/species/ipc.dm
index b30604df79803..8c8f344dbd707 100644
--- a/code/modules/organs/internal/species/ipc.dm
+++ b/code/modules/organs/internal/species/ipc.dm
@@ -32,10 +32,10 @@
 		)
 	var/shackle = 0
 
-/obj/item/organ/internal/posibrain/New(mob/living/carbon/H)
-	..()
-	if(!brainmob && H)
-		init(H)
+/obj/item/organ/internal/posibrain/Initialize()
+	. = ..()
+	if(!brainmob && iscarbon(loc))
+		init(loc)
 	robotize()
 	unshackle()
 	update_icon()
diff --git a/code/modules/organs/internal/species/nabber.dm b/code/modules/organs/internal/species/nabber.dm
index c5aa505ca5fd4..fe53a96ac77b7 100644
--- a/code/modules/organs/internal/species/nabber.dm
+++ b/code/modules/organs/internal/species/nabber.dm
@@ -60,7 +60,7 @@
 /obj/item/organ/internal/eyes/insectoid/nabber/proc/remove_shield()
 	owner.clear_fullscreen("eyeshield")
 
-/obj/item/organ/internal/eyes/nabber/New(mob/living/carbon/holder)
+/obj/item/organ/internal/eyes/nabber/Initialize()
 	. = ..()
 	if(dna)
 		color = rgb(dna.GetUIValue(DNA_UI_EYES_R), dna.GetUIValue(DNA_UI_EYES_G), dna.GetUIValue(DNA_UI_EYES_B))
diff --git a/code/modules/organs/internal/species/vox.dm b/code/modules/organs/internal/species/vox.dm
index bbafd5d7486da..c761deec4c3b3 100644
--- a/code/modules/organs/internal/species/vox.dm
+++ b/code/modules/organs/internal/species/vox.dm
@@ -174,8 +174,8 @@
 	var/datum/mind/backup
 	var/prompting = FALSE // Are we waiting for a user prompt?
 
-/obj/item/organ/internal/voxstack/New()
-	..()
+/obj/item/organ/internal/voxstack/Initialize()
+	. = ..()
 	do_backup()
 	robotize()
 
diff --git a/code/modules/organs/internal/stomach.dm b/code/modules/organs/internal/stomach.dm
index 6f0b0416967b4..e9809dcb55817 100644
--- a/code/modules/organs/internal/stomach.dm
+++ b/code/modules/organs/internal/stomach.dm
@@ -15,8 +15,8 @@
 	QDEL_NULL(ingested)
 	. = ..()
 
-/obj/item/organ/internal/stomach/New()
-	..()
+/obj/item/organ/internal/stomach/Initialize()
+	. = ..()
 	var/ingested_atom = owner ? owner : src
 	ingested = new/datum/reagents/metabolism(240, ingested_atom, CHEM_INGEST)
 	if(species.gluttonous)
diff --git a/code/modules/organs/organ.dm b/code/modules/organs/organ.dm
index c1e80f908cafb..56e24bf82d74d 100644
--- a/code/modules/organs/organ.dm
+++ b/code/modules/organs/organ.dm
@@ -50,8 +50,8 @@ var/global/list/organ_cache = list()
 	return (damage >= min_broken_damage || (status & ORGAN_CUT_AWAY) || (status & ORGAN_BROKEN))
 
 //Second argument may be a dna datum; if null will be set to holder's dna.
-/obj/item/organ/New(mob/living/carbon/holder, datum/dna/given_dna)
-	..(holder)
+/obj/item/organ/Initialize(mapload, datum/dna/given_dna)
+	. = ..()
 	if(!istype(given_dna))
 		given_dna = null
 
@@ -59,13 +59,12 @@ var/global/list/organ_cache = list()
 		min_broken_damage = floor(max_damage / 2)
 	else
 		max_damage = min_broken_damage * 2
-
-	if(istype(holder))
-		owner = holder
-		if(!given_dna && holder.dna)
-			given_dna = holder.dna
+	if (iscarbon(loc))
+		owner = loc
+		if(!given_dna && owner.dna)
+			given_dna = owner.dna
 		else
-			log_debug("[src] spawned in [holder] without a proper DNA.")
+			log_debug("[src] spawned in [owner] without a proper DNA.")
 
 	if (given_dna)
 		set_dna(given_dna)