diff --git a/code/ATMOSPHERICS/components/unary/vent_pump.dm b/code/ATMOSPHERICS/components/unary/vent_pump.dm
index 8af45a38ba4..34fb0df284a 100644
--- a/code/ATMOSPHERICS/components/unary/vent_pump.dm
+++ b/code/ATMOSPHERICS/components/unary/vent_pump.dm
@@ -322,14 +322,77 @@
 	return
 
 /*
-	Alt-click to ventcrawl - Monkeys, aliens, and slimes
-	This is a little buggy but somehow that just seems to plague ventcrawl.
-	I am sorry, I don't know why.
+	Alt-click to ventcrawl
 */
-/obj/machinery/atmospherics/unary/vent_pump/AltClick(var/mob/living/carbon/ML)
-	if(istype(ML))
-		var/list/ventcrawl_verbs = list(/mob/living/carbon/monkey/verb/ventcrawl, /mob/living/carbon/alien/verb/ventcrawl, /mob/living/carbon/slime/verb/ventcrawl)
-		if(length(ML.verbs & ventcrawl_verbs)) // alien queens have this removed, an istype would be complicated
-			ML.handle_ventcrawl(src)
-			return
-	..()
+/obj/machinery/atmospherics/unary/vent_pump/AltClick(var/mob/living/L)
+	if(!L.ventcrawler || !isliving(L) || !Adjacent(L))
+		return
+	if(L.stat)
+		L << "You must be conscious to do this!"
+		return
+	if(L.lying)
+		L << "You can't vent crawl while you're stunned!"
+		return
+	if(welded)
+		L << "That vent is welded shut."
+		return
+
+	/*else
+		for(var/obj/machinery/atmospherics/unary/vent_pump/v in range(1,src))
+			if(!v.welded)
+				if(v.Adjacent(src))
+					vent_found = v*/
+
+	if(!network || !network.normal_members.len)
+		L << "This vent is not connected to anything."
+		return
+
+	var/list/vents = list()
+	for(var/obj/machinery/atmospherics/unary/vent_pump/temp_vent in network.normal_members)
+		if(temp_vent.welded)
+			continue
+		if(temp_vent in loc)
+			continue
+		var/turf/T = get_turf(temp_vent)
+
+		if(!T || T.z != loc.z)
+			continue
+
+		var/i = 1
+		var/index = "[T.loc.name]\[[i]\]"
+		while(index in vents)
+			i++
+			index = "[T.loc.name]\[[i]\]"
+		vents[index] = temp_vent
+	if(!vents.len)
+		L << "<span class='warning'> There are no available vents to travel to, they could be welded. </span>"
+		return
+
+	var/obj/selection = input(L,"Select a destination.", "Duct System") as null|anything in sortAssoc(vents)
+	if(!selection)	return
+
+	if(!Adjacent(L))
+		return
+	if(iscarbon(L) && L.ventcrawler < 2) // lesser ventcrawlers can't bring items
+		for(var/obj/item/carried_item in L.contents)
+			if(!istype(carried_item, /obj/item/weapon/implant))//If it's not an implant or a facehugger
+				L << "<span class='warning'> You can't be carrying items or have items equipped when vent crawling!</span>"
+				return
+
+	var/obj/machinery/atmospherics/unary/vent_pump/target_vent = vents[selection]
+	if(!target_vent)
+		return
+
+	for(var/mob/O in viewers(L, null))
+		O.show_message(text("<B>[L] scrambles into the ventillation ducts!</B>"), 1)
+
+	for(var/mob/O in hearers(target_vent,null))
+		O.show_message("You hear something squeezing through the ventilation ducts.",2)
+
+	if(target_vent.welded)		//the vent can be welded while they scrolled through the list.
+		target_vent = src
+		L << "<span class='warning'> The vent you were heading to appears to be welded.</span>"
+	L.loc = target_vent.loc
+	var/area/new_area = get_area(loc)
+	if(new_area)
+		new_area.Entered(L)
diff --git a/code/modules/mob/living/carbon/alien/alien.dm b/code/modules/mob/living/carbon/alien/alien.dm
index 2de3f3ef8d4..ddbaeafd8b7 100644
--- a/code/modules/mob/living/carbon/alien/alien.dm
+++ b/code/modules/mob/living/carbon/alien/alien.dm
@@ -11,6 +11,7 @@
 	gender = NEUTER
 	dna = null
 	faction = "alien"
+	ventcrawler = 2
 
 	var/storedPlasma = 250
 	var/max_plasma = 500
diff --git a/code/modules/mob/living/carbon/alien/humanoid/queen.dm b/code/modules/mob/living/carbon/alien/humanoid/queen.dm
index 524405ec1d5..bdbb5bbcad5 100644
--- a/code/modules/mob/living/carbon/alien/humanoid/queen.dm
+++ b/code/modules/mob/living/carbon/alien/humanoid/queen.dm
@@ -7,6 +7,7 @@
 	status_flags = CANPARALYSE
 	heal_rate = 5
 	plasma_rate = 20
+	ventcrawler = 0 //pull over that ass too fat
 
 
 /mob/living/carbon/alien/humanoid/queen/New()
@@ -22,7 +23,6 @@
 
 	real_name = src.name
 	verbs.Add(/mob/living/carbon/alien/humanoid/proc/corrosive_acid,/mob/living/carbon/alien/humanoid/proc/neurotoxin,/mob/living/carbon/alien/humanoid/proc/resin)
-	verbs -= /mob/living/carbon/alien/verb/ventcrawl
 	..()
 
 /mob/living/carbon/alien/humanoid/queen/handle_regular_hud_updates()
@@ -85,4 +85,4 @@
 	else
 		icon_state = "queen_s"
 	for(var/image/I in overlays_standing)
-		overlays += I
+		overlays += I
diff --git a/code/modules/mob/living/carbon/alien/powers.dm b/code/modules/mob/living/carbon/alien/powers.dm
deleted file mode 100644
index d9452a8d799..00000000000
--- a/code/modules/mob/living/carbon/alien/powers.dm
+++ /dev/null
@@ -1,5 +0,0 @@
-/mob/living/carbon/alien/verb/ventcrawl() // -- TLE
-	set name = "Crawl through vent"
-	set desc = "Enter an air vent and crawl through the pipe system."
-	set category = "Alien"
-	handle_ventcrawl()
\ No newline at end of file
diff --git a/code/modules/mob/living/carbon/carbon.dm b/code/modules/mob/living/carbon/carbon.dm
index 99f30cceec9..35a9031a6e6 100644
--- a/code/modules/mob/living/carbon/carbon.dm
+++ b/code/modules/mob/living/carbon/carbon.dm
@@ -221,99 +221,6 @@
 
 // ++++ROCKDTBEN++++ MOB PROCS //END
 
-/mob/living/carbon/proc/handle_ventcrawl(var/obj/machinery/atmospherics/unary/vent_pump/vent_found = null) // -- TLE -- Merged by Carn
-	if(stat)
-		src << "You must be conscious to do this!"
-		return
-	if(lying)
-		src << "You can't vent crawl while you're stunned!"
-		return
-
-	if(vent_found) // one was passed in, probably from vent/AltClick()
-		if(vent_found.welded)
-			src << "That vent is welded shut."
-			return
-		if(!vent_found.Adjacent(src))
-			return // don't even acknowledge that
-	else
-		for(var/obj/machinery/atmospherics/unary/vent_pump/v in range(1,src))
-			if(!v.welded)
-				if(v.Adjacent(src))
-					vent_found = v
-	if(!vent_found)
-		src << "You'll need a non-welded vent to crawl into!"
-		return
-
-	if(!vent_found.network || !vent_found.network.normal_members.len)
-		src << "This vent is not connected to anything."
-		return
-
-	var/list/vents = list()
-	for(var/obj/machinery/atmospherics/unary/vent_pump/temp_vent in vent_found.network.normal_members)
-		if(temp_vent.welded)
-			continue
-		if(temp_vent in loc)
-			continue
-		var/turf/T = get_turf(temp_vent)
-
-		if(!T || T.z != loc.z)
-			continue
-
-		var/i = 1
-		var/index = "[T.loc.name]\[[i]\]"
-		while(index in vents)
-			i++
-			index = "[T.loc.name]\[[i]\]"
-		vents[index] = temp_vent
-	if(!vents.len)
-		src << "\red There are no available vents to travel to, they could be welded."
-		return
-
-	var/obj/selection = input("Select a destination.", "Duct System") as null|anything in sortAssoc(vents)
-	if(!selection)	return
-
-	if(!vent_found.Adjacent(src))
-		src << "Never mind, you left."
-		return
-
-	for(var/obj/item/carried_item in contents)//If the monkey got on objects.
-		if( !istype(carried_item, /obj/item/weapon/implant) && !istype(carried_item, /obj/item/clothing/mask/facehugger) )//If it's not an implant or a facehugger
-			src << "\red You can't be carrying items or have items equipped when vent crawling!"
-			return
-	if(isslime(src))
-		var/mob/living/carbon/slime/S = src
-		if(S.Victim)
-			src << "\red You'll have to let [S.Victim] go or finish eating \him first."
-			return
-
-	var/obj/machinery/atmospherics/unary/vent_pump/target_vent = vents[selection]
-	if(!target_vent)
-		return
-
-	for(var/mob/O in viewers(src, null))
-		O.show_message(text("<B>[src] scrambles into the ventillation ducts!</B>"), 1)
-	loc = target_vent
-
-	var/travel_time = round(get_dist(loc, target_vent.loc) / 2)
-
-	spawn(travel_time)
-
-		if(!target_vent)	return
-		for(var/mob/O in hearers(target_vent,null))
-			O.show_message("You hear something squeezing through the ventilation ducts.",2)
-
-		sleep(travel_time)
-
-		if(!target_vent)	return
-		if(target_vent.welded)			//the vent can be welded while alien scrolled through the list or travelled.
-			target_vent = vent_found 	//travel back. No additional time required.
-			src << "\red The vent you were heading to appears to be welded."
-		loc = target_vent.loc
-		var/area/new_area = get_area(loc)
-		if(new_area)
-			new_area.Entered(src)
-
-
 /mob/living/carbon/clean_blood()
 	if(ishuman(src))
 		var/mob/living/carbon/human/H = src
@@ -553,4 +460,4 @@ var/const/GALOSHES_DONT_HELP = 8
 	loc.handle_slip(src, s_amount, w_amount, O, lube)
 
 /mob/living/carbon/fall(var/forced)
-    loc.handle_fall(src, forced)//it's loc so it doesn't call the mob's handle_fall which does nothing
+    loc.handle_fall(src, forced)//it's loc so it doesn't call the mob's handle_fall which does nothing
diff --git a/code/modules/mob/living/carbon/metroid/metroid.dm b/code/modules/mob/living/carbon/metroid/metroid.dm
index fd6f3c0c9f9..25ff7633f35 100644
--- a/code/modules/mob/living/carbon/metroid/metroid.dm
+++ b/code/modules/mob/living/carbon/metroid/metroid.dm
@@ -5,6 +5,7 @@
 	pass_flags = PASSTABLE
 	voice_message = "skree!"
 	say_message = "hums"
+	ventcrawler = 2
 	var/is_adult = 0
 
 	layer = 5
diff --git a/code/modules/mob/living/carbon/metroid/powers.dm b/code/modules/mob/living/carbon/metroid/powers.dm
index 6f186f0087c..ed7149cdd83 100644
--- a/code/modules/mob/living/carbon/metroid/powers.dm
+++ b/code/modules/mob/living/carbon/metroid/powers.dm
@@ -225,13 +225,4 @@
 		else
 			src << "<i>I am not ready to reproduce yet...</i>"
 	else
-		src << "<i>I am not old enough to reproduce yet...</i>"
-
-
-
-/mob/living/carbon/slime/verb/ventcrawl()
-	set name = "Crawl through Vent"
-	set desc = "Enter an air vent and crawl through the pipe system."
-	set category = "Slime"
-	if(Victim)	return
-	handle_ventcrawl()
\ No newline at end of file
+		src << "<i>I am not old enough to reproduce yet...</i>"
\ No newline at end of file
diff --git a/code/modules/mob/living/carbon/monkey/monkey.dm b/code/modules/mob/living/carbon/monkey/monkey.dm
index 5f013d6b304..89374137ff4 100644
--- a/code/modules/mob/living/carbon/monkey/monkey.dm
+++ b/code/modules/mob/living/carbon/monkey/monkey.dm
@@ -8,6 +8,7 @@
 	gender = NEUTER
 	pass_flags = PASSTABLE
 	update_icon = 0		///no need to call regenerate_icon
+	ventcrawler = 1
 
 /mob/living/carbon/monkey/New()
 	create_reagents(1000)
diff --git a/code/modules/mob/living/carbon/monkey/powers.dm b/code/modules/mob/living/carbon/monkey/powers.dm
deleted file mode 100644
index e7c6937cda2..00000000000
--- a/code/modules/mob/living/carbon/monkey/powers.dm
+++ /dev/null
@@ -1,5 +0,0 @@
-/mob/living/carbon/monkey/verb/ventcrawl()
-	set name = "Crawl through Vent"
-	set desc = "Enter an air vent and crawl through the pipe system."
-	set category = "Monkey"
-	handle_ventcrawl()
diff --git a/code/modules/mob/living/living_defines.dm b/code/modules/mob/living/living_defines.dm
index 9af8ddf1526..8168e11778a 100644
--- a/code/modules/mob/living/living_defines.dm
+++ b/code/modules/mob/living/living_defines.dm
@@ -35,3 +35,5 @@
 
 	var/on_fire = 0 //The "Are we on fire?" var
 	var/fire_stacks = 0 //Tracks how many stacks of fire we have on, max is usually 20
+
+	var/ventcrawler = 0 //0 No vent crawling, 1 vent crawling in the nude, 2 vent crawling always
diff --git a/code/modules/mob/living/simple_animal/friendly/crab.dm b/code/modules/mob/living/simple_animal/friendly/crab.dm
index a033f81ac63..0df85076f4f 100644
--- a/code/modules/mob/living/simple_animal/friendly/crab.dm
+++ b/code/modules/mob/living/simple_animal/friendly/crab.dm
@@ -16,6 +16,7 @@
 	response_harm   = "stomps"
 	stop_automated_movement = 1
 	friendly = "pinches"
+	ventcrawler = 2
 	var/obj/item/inventory_head
 	var/obj/item/inventory_mask
 
diff --git a/code/modules/mob/living/simple_animal/friendly/farm_animals.dm b/code/modules/mob/living/simple_animal/friendly/farm_animals.dm
index e997036477f..e56df2e9648 100644
--- a/code/modules/mob/living/simple_animal/friendly/farm_animals.dm
+++ b/code/modules/mob/living/simple_animal/friendly/farm_animals.dm
@@ -166,6 +166,7 @@
 	response_harm   = "kicks"
 	attacktext = "kicks"
 	health = 1
+	ventcrawler = 2
 	var/amount_grown = 0
 	pass_flags = PASSTABLE | PASSGRILLE
 
@@ -206,6 +207,7 @@ var/global/chicken_count = 0
 	response_harm   = "kicks"
 	attacktext = "kicks"
 	health = 10
+	ventcrawler = 2
 	var/eggsleft = 0
 	var/body_color
 	pass_flags = PASSTABLE
diff --git a/code/modules/mob/living/simple_animal/friendly/lizard.dm b/code/modules/mob/living/simple_animal/friendly/lizard.dm
index 48b5685e6dc..5cfb67fa0e3 100644
--- a/code/modules/mob/living/simple_animal/friendly/lizard.dm
+++ b/code/modules/mob/living/simple_animal/friendly/lizard.dm
@@ -13,4 +13,5 @@
 	melee_damage_upper = 2
 	response_help  = "pets"
 	response_disarm = "shoos"
-	response_harm   = "stomps on"
\ No newline at end of file
+	response_harm   = "stomps on"
+	ventcrawler = 2
\ No newline at end of file
diff --git a/code/modules/mob/living/simple_animal/friendly/mouse.dm b/code/modules/mob/living/simple_animal/friendly/mouse.dm
index e1b266d7edf..6fd06c6a3cb 100644
--- a/code/modules/mob/living/simple_animal/friendly/mouse.dm
+++ b/code/modules/mob/living/simple_animal/friendly/mouse.dm
@@ -18,6 +18,7 @@
 	response_disarm = "gently pushes aside"
 	response_harm   = "splats"
 	density = 0
+	ventcrawler = 2
 	var/body_color //brown, gray and white, leave blank for random
 
 /mob/living/simple_animal/mouse/New()
diff --git a/code/modules/mob/living/simple_animal/friendly/slime.dm b/code/modules/mob/living/simple_animal/friendly/slime.dm
index b49c3e9eabc..de3b5e5a313 100644
--- a/code/modules/mob/living/simple_animal/friendly/slime.dm
+++ b/code/modules/mob/living/simple_animal/friendly/slime.dm
@@ -12,6 +12,7 @@
 	response_disarm = "shoos"
 	response_harm   = "stomps on"
 	emote_see = list("jiggles", "bounces in place")
+	ventcrawler = 2
 	var/colour = "grey"
 
 /mob/living/simple_animal/slime/Bump(atom/movable/AM as mob|obj, yes)
diff --git a/code/modules/mob/living/simple_animal/friendly/tomato.dm b/code/modules/mob/living/simple_animal/friendly/tomato.dm
index 57c0f4c939b..30e675e5a8e 100644
--- a/code/modules/mob/living/simple_animal/friendly/tomato.dm
+++ b/code/modules/mob/living/simple_animal/friendly/tomato.dm
@@ -12,4 +12,5 @@
 	response_help  = "prods"
 	response_disarm = "pushes aside"
 	response_harm   = "smacks"
-	harm_intent_damage = 5
\ No newline at end of file
+	harm_intent_damage = 5
+	ventcrawler = 2
diff --git a/code/modules/mob/living/simple_animal/hostile/giant_spider.dm b/code/modules/mob/living/simple_animal/hostile/giant_spider.dm
index c4e1c38c32d..e0a39a8aa8d 100644
--- a/code/modules/mob/living/simple_animal/hostile/giant_spider.dm
+++ b/code/modules/mob/living/simple_animal/hostile/giant_spider.dm
@@ -34,6 +34,7 @@
 	var/busy = 0
 	pass_flags = PASSTABLE
 	move_to_delay = 6
+	ventcrawler = 2
 
 //nursemaids - these create webs and eggs
 /mob/living/simple_animal/hostile/giant_spider/nurse
diff --git a/code/modules/mob/living/simple_animal/hostile/mushroom.dm b/code/modules/mob/living/simple_animal/hostile/mushroom.dm
index 88770679633..42ee3d600f4 100644
--- a/code/modules/mob/living/simple_animal/hostile/mushroom.dm
+++ b/code/modules/mob/living/simple_animal/hostile/mushroom.dm
@@ -22,6 +22,7 @@
 	stat_attack = 2
 	mouse_opacity = 1
 	speed = 1
+	ventcrawler = 2
 	var/powerlevel = 0 //Tracks our general strength level gained from eating other shrooms
 	var/bruised = 0 //If someone tries to cheat the system by attacking a shroom to lower its health, punish them so that it wont award levels to shrooms that eat it
 	var/recovery_cooldown = 0 //So you can't repeatedly revive it during a fight
diff --git a/code/modules/mob/living/simple_animal/hostile/retaliate/bat.dm b/code/modules/mob/living/simple_animal/hostile/retaliate/bat.dm
index 5c575649e83..8e32e320b36 100644
--- a/code/modules/mob/living/simple_animal/hostile/retaliate/bat.dm
+++ b/code/modules/mob/living/simple_animal/hostile/retaliate/bat.dm
@@ -23,6 +23,7 @@
 	faction = "carp"
 	attack_sound = 'sound/weapons/bite.ogg'
 	environment_smash = 0
+	ventcrawler = 2
 
 
 	//Space bats need no air to fly in.