diff --git a/code/game/gamemodes/changeling/helpers/_store.dm b/code/game/gamemodes/changeling/helpers/_store.dm
index 6f122fea858..97e23dea1cf 100644
--- a/code/game/gamemodes/changeling/helpers/_store.dm
+++ b/code/game/gamemodes/changeling/helpers/_store.dm
@@ -38,8 +38,8 @@ var/list/datum/power/changeling/powerinstances = list()
 
 /datum/power/changeling/lesser_form
 	name = "Lesser Form"
-	desc = "We debase ourselves and become lesser. We become a monkey."
-	genomecost = 4
+	desc = "We debase ourselves and become lesser. We become a weaker, but more mobile form."
+	genomecost = 2
 	verbpath = /mob/proc/changeling_lesser_form
 
 /datum/power/changeling/mimicvoice
@@ -54,7 +54,6 @@ var/list/datum/power/changeling/powerinstances = list()
 	desc = "We fake our own death, imperceptible to even the best of doctors. We can choose when to re-animate."
 	helptext = "Can be used before or after death. Duration varies greatly."
 	genomecost = 0
-	allowduringlesserform = TRUE
 	verbpath = /mob/proc/changeling_fakedeath
 
 //Hivemind
diff --git a/code/game/gamemodes/changeling/implements/powers/body.dm b/code/game/gamemodes/changeling/implements/powers/body.dm
index cb3fa9ce750..e8aaed52988 100644
--- a/code/game/gamemodes/changeling/implements/powers/body.dm
+++ b/code/game/gamemodes/changeling/implements/powers/body.dm
@@ -7,6 +7,10 @@
 	if(!changeling)
 		return
 
+	if(!ishuman(src))
+		to_chat(src, "<span class='warning'>We cannot perform this ability as this form!</span>")
+		return
+
 	var/list/names = list()
 	for(var/datum/absorbed_dna/DNA in changeling.absorbed_dna)
 		names += "[DNA.name]"
@@ -33,9 +37,8 @@
 	return TRUE
 
 /mob/proc/handle_changeling_transform(var/datum/absorbed_dna/chosen_dna)
-	src.visible_message("<span class='warning'>[src] transforms!</span>")
-
 	if(ishuman(src))
+		src.visible_message("<span class='warning'>[src] transforms!</span>")
 		var/mob/living/carbon/human/H = src
 		var/newSpecies = chosen_dna.speciesName
 		H.set_species(newSpecies, 1)
@@ -75,7 +78,30 @@
 	H.visible_message("<span class='warning'>[H] transforms!</span>")
 	changeling.geneticdamage = 30
 	to_chat(H, "<span class='warning'>Our genes cry out!</span>")
-	H = H.monkeyize()
+
+	var/mob/living/simple_animal/hostile/lesser_changeling/ling = new (get_turf(H))
+
+	if(istype(H,/mob/living/carbon/human))
+		for(var/obj/item/I in H.contents)
+			if(isorgan(I))
+				continue
+			H.drop_from_inventory(I)
+
+	if(H.mind)
+		H.mind.transfer_to(ling)
+	else
+		ling.key = H.key
+	ling.occupant = H
+	var/atom/movable/overlay/effect = new /atom/movable/overlay(get_turf(H))
+	effect.density = FALSE
+	effect.anchored = TRUE
+	effect.icon = 'icons/effects/effects.dmi'
+	effect.layer = 3
+	flick("summoning", effect)
+	QDEL_IN(effect, 10)
+	H.forceMove(ling)
+	H.status_flags |= GODMODE
+
 	feedback_add_details("changeling_powers", "LF")
 	return TRUE
 
@@ -338,7 +364,7 @@
 	if(M.l_hand && M.r_hand)
 		to_chat(M, "<span class='danger'>Your hands are full.</span>")
 		return
-	
+
 	if(M.handcuffed)
 		var/cuffs = M.handcuffed
 		M.u_equip(M.handcuffed)
diff --git a/code/modules/mob/living/simple_animal/hostile/changeling.dm b/code/modules/mob/living/simple_animal/hostile/changeling.dm
index 9f5c3547a88..a2e514e1755 100644
--- a/code/modules/mob/living/simple_animal/hostile/changeling.dm
+++ b/code/modules/mob/living/simple_animal/hostile/changeling.dm
@@ -6,9 +6,9 @@
 	icon_state = "abomination"
 	icon_living = "abomination"
 	icon_dead = "abomination_dead"
-	stop_automated_movement = 1
-	universal_speak = 1
-	universal_understand = 1
+	stop_automated_movement = TRUE
+	universal_speak = TRUE
+	universal_understand = TRUE
 
 	mob_swap_flags = HUMAN|SIMPLE_ANIMAL|SLIME|MONKEY
 	mob_push_flags = ALLMOBS
@@ -139,3 +139,94 @@
 	var/obj/item/bone_dart/A = new /obj/item/bone_dart(usr.loc)
 	A.throw_at(target, 10, 20, usr)
 	add_logs(src, target, "launched a bone dart at")
+
+/mob/living/simple_animal/hostile/lesser_changeling
+	name = "crawling horror"
+	desc = "An agile monster made of twisted flesh and bone."
+	speak_emote = list("gibbers")
+	icon = 'icons/mob/npc/animal.dmi'
+	icon_state = "lesser_ling"
+	icon_living = "lesser_ling"
+
+	stop_automated_movement = TRUE
+	universal_speak = TRUE
+	universal_understand = TRUE
+
+	tameable = FALSE
+
+	response_help  = "pets"
+	response_disarm = "shoves"
+	response_harm   = "harmlessly punches"
+	maxHealth = 150
+	health = 150
+	harm_intent_damage = 5
+	melee_damage_lower = 5
+	melee_damage_upper = 10
+	mob_size = 15
+	attacktext = "mangled"
+	attack_sound = 'sound/weapons/bloodyslice.ogg'
+
+	see_in_dark = 8
+	see_invisible = SEE_INVISIBLE_NOLIGHTING
+
+	pass_flags = PASSTABLE
+
+	density = FALSE
+
+	minbodytemp = 0
+	maxbodytemp = 350
+	min_oxy = 0
+	max_co2 = 0
+	max_tox = 0
+
+	speed = -2
+
+	var/mob/living/carbon/human/occupant = null
+
+/mob/living/simple_animal/hostile/lesser_changeling/Initialize()
+	. = ..()
+	verbs += /mob/living/proc/ventcrawl
+
+/mob/living/simple_animal/hostile/lesser_changeling/mind_initialize()
+	..()
+	mind.assigned_role = "Changeling"
+
+/mob/living/simple_animal/hostile/lesser_changeling/death(gibbed)
+	..()
+	if(!gibbed)
+		if(occupant)
+			occupant.forceMove(get_turf(src))
+			occupant.status_flags &= ~GODMODE
+			if(mind)
+				mind.transfer_to(occupant)
+
+		visible_message("<span class='warning'>\The [src] explodes into a shower of gore!</span>")
+		gibs(src.loc)
+		qdel(src)
+		return
+
+/mob/living/simple_animal/hostile/lesser_changeling/verb/untransform()
+	set name = "Return to original form"
+	set desc = "Return to your original form."
+	set category = "Changeling"
+
+	if(!health)
+		to_chat(usr, "<span class='notice'>We are dead, we cannot use any abilities!</span>")
+		return
+
+	if(last_special > world.time)
+		return
+
+	if(!isturf(loc))
+		return
+
+	last_special = world.time + 30
+
+	if(occupant)
+		occupant.forceMove(get_turf(src))
+		occupant.status_flags &= ~GODMODE
+		if(mind)
+			mind.transfer_to(occupant)
+		visible_message("<span class='warning'>\The [src] explodes into a shower of gore!</span>")
+		gibs(src.loc)
+		qdel(src)
\ No newline at end of file
diff --git a/code/modules/ventcrawl/ventcrawl.dm b/code/modules/ventcrawl/ventcrawl.dm
index e77664b2f08..00c9c936fe2 100644
--- a/code/modules/ventcrawl/ventcrawl.dm
+++ b/code/modules/ventcrawl/ventcrawl.dm
@@ -11,7 +11,8 @@ var/global/list/can_enter_vent_with = list(
 	/obj/item/holder,
 	/obj/machinery/camera,
 	/mob/living/simple_animal/borer,
-	/mob/living/simple_animal/rat
+	/mob/living/simple_animal/rat,
+	/mob/living/carbon/human
 	)
 
 /mob/living/var/list/icon/pipes_shown = list()
diff --git a/code/modules/ventcrawl/ventcrawl_atmospherics.dm b/code/modules/ventcrawl/ventcrawl_atmospherics.dm
index 994ab757f0b..4795bfa27b4 100644
--- a/code/modules/ventcrawl/ventcrawl_atmospherics.dm
+++ b/code/modules/ventcrawl/ventcrawl_atmospherics.dm
@@ -41,14 +41,17 @@
 	//If its not small or the device isnt enabled, it wont blend
 	if(!issmall(AM) || !use_power)
 		return FALSE
-	
+
 	//Get the things we need to create the "output"
 	var/mob/living/L = AM
 
+	if(L.mob_size > MOB_TINY)
+		return
+
 	var/blood_color = "#A10808"
 	if(L.blood_color)
 		blood_color = L.blood_color
-	
+
 	if(iscarbon(AM))
 		var/mob/living/carbon/C = AM
 		blood_color = C.species.blood_color
@@ -58,7 +61,7 @@
 	//Blend the Mob
 	to_chat(AM, span("danger","\The [src] blends you to a fine dust."))
 	L.death()
-	qdel(L)	
+	qdel(L)
 
 	//Output what´s left through the connected vents
 	if(N)
diff --git a/html/changelogs/alberyk_newlesser.yml b/html/changelogs/alberyk_newlesser.yml
new file mode 100644
index 00000000000..72ac65e7d73
--- /dev/null
+++ b/html/changelogs/alberyk_newlesser.yml
@@ -0,0 +1,6 @@
+author: Alberyk, Kyres1
+
+delete-after: True
+
+changes: 
+  - rscadd: "Reworked the changeling lesser form power. It transform the changeling into a small monster, that can ventcrawl and fun fast."
diff --git a/icons/mob/npc/animal.dmi b/icons/mob/npc/animal.dmi
index 201c735276d..f1de8defea7 100644
Binary files a/icons/mob/npc/animal.dmi and b/icons/mob/npc/animal.dmi differ