diff --git a/code/__HELPERS/mobs.dm b/code/__HELPERS/mobs.dm
index 5f6d0248..af7e92b1 100644
--- a/code/__HELPERS/mobs.dm
+++ b/code/__HELPERS/mobs.dm
@@ -183,6 +183,7 @@
 		"cock_shape"		= pick(GLOB.cock_shapes_list),
 		"cock_length"		= 6,
 		"belly_size"			= 1,
+		"butt_size"			= 1,
 		"cock_girth_ratio"	= COCK_GIRTH_RATIO_DEF,
 		"cock_color"		= pick("FFFFFF","7F7F7F", "7FFF7F", "7F7FFF", "FF7F7F", "7FFFFF", "FF7FFF", "FFFF7F"),
 		"has_sheath"		= FALSE,
diff --git a/code/modules/client/preferences.dm b/code/modules/client/preferences.dm
index 9bc42104..42ae307a 100644
--- a/code/modules/client/preferences.dm
+++ b/code/modules/client/preferences.dm
@@ -134,6 +134,7 @@ GLOBAL_LIST_EMPTY(preferences_datums)
 		"cock_shape" = "Human",
 		"cock_length" = 6,
 		"belly_size" = 1,
+		"butt_size" = 1,
 		"cock_girth_ratio" = COCK_GIRTH_RATIO_DEF,
 		"cock_color" = "fff",
 		"has_sheath" = FALSE,
@@ -923,8 +924,10 @@ GLOBAL_LIST_EMPTY(preferences_datums)
 				dat += "</td>"
 
 				dat += APPEARANCE_CATEGORY_COLUMN
-				dat += "<h3>Anus</h3>"
+				dat += "<h3>Butt</h3>"
 				dat += "<a style='display:block;width:50px' href='?_src_=prefs;preference=has_anus'>[features["has_anus"] == TRUE ? "Yes" : "No"]</a>"
+				if(features["has_anus"])
+					dat += "<b>Butt Size:</b> <a style='display:block;width:120px' href='?_src_=prefs;preference=butt_size;task=input'>[features["butt_size"]]</a>"
 				dat += "</td>"
 
 			dat += "</td>"
@@ -2347,6 +2350,10 @@ GLOBAL_LIST_EMPTY(preferences_datums)
 					if(new_bellysize)
 						features["belly_size"] = clamp(new_bellysize, 1, 3)
 
+				if("butt_size")
+					var/new_buttsize = input(user, "Butt size :\n(0-4)", "Character Preference") as num|null
+					features["butt_size"] = clamp(new_buttsize, 0, 4)
+
 				if("vag_shape")
 					var/new_shape
 					new_shape = input(user, "Vagina Type", "Character Preference") as null|anything in GLOB.vagina_shapes_list
@@ -2511,6 +2518,8 @@ GLOBAL_LIST_EMPTY(preferences_datums)
 						features["can_get_preg"] = FALSE
 				if("has_anus")
 					features["has_anus"] = !features["has_anus"]
+					if(features["has_anus"] == FALSE)
+						features["butt_size"] = 0
 				if("has_womb")
 					features["has_womb"] = !features["has_womb"]
 				if("can_get_preg")
diff --git a/code/modules/client/preferences_savefile.dm b/code/modules/client/preferences_savefile.dm
index 32c0f9e3..71379b48 100644
--- a/code/modules/client/preferences_savefile.dm
+++ b/code/modules/client/preferences_savefile.dm
@@ -402,6 +402,8 @@ SAVEFILE UPDATING/VERSIONING - 'Simplified', or rather, more coder-friendly ~Car
 	S["feature_has_sheath"]				>> features["sheath_color"]
 	//belly size
 	S["feature_belly_size"]				>> features["belly_size"]
+	//belly size
+	S["feature_butt_size"]				>> features["butt_size"]
 	//balls features
 	S["feature_has_balls"]				>> features["has_balls"]
 	S["feature_balls_color"]			>> features["balls_color"]
diff --git a/hyperstation/icons/obj/genitals/butt.dmi b/hyperstation/icons/obj/genitals/butt.dmi
index cf74d737..08e60ea5 100644
Binary files a/hyperstation/icons/obj/genitals/butt.dmi and b/hyperstation/icons/obj/genitals/butt.dmi differ
diff --git a/modular_citadel/code/modules/arousal/organs/anus.dm b/modular_citadel/code/modules/arousal/organs/anus.dm
index 2652d361..5652aa84 100644
--- a/modular_citadel/code/modules/arousal/organs/anus.dm
+++ b/modular_citadel/code/modules/arousal/organs/anus.dm
@@ -1,18 +1,19 @@
 /obj/item/organ/genital/anus
 	name 					= "anus"
-	desc 					= ""
+	desc 					= "You see a butt."
+	icon_state 				= "butt"
+	icon 					= 'modular_citadel/icons/obj/genitals/breasts.dmi'
 	zone 					= "groin"
 	slot 					= "anus"
 	w_class 				= 3
 	size 					= 0
 	var/statuscheck			= FALSE
+	shape					= "Pair"
 	masturbation_verb 		= "massage"
-	can_climax				= FALSE //no poo poo 4 u
-	nochange				= TRUE
+	can_climax				= FALSE
+
 
 
-/obj/item/organ/genital/anus/Initialize()
-	. = ..()
 
 /obj/item/organ/genital/anus/on_life()
 	if(QDELETED(src))
@@ -21,5 +22,15 @@
 		return
 
 
+/obj/item/organ/genital/anus/update_appearance()
+	var/string
+	if(owner)
+		var/mob/living/carbon/human/H = owner
+		color = "#[skintone2hex(H.skin_tone)]"
 
+		if(ishuman(owner))
+			icon_state = sanitize_text(string)
+			H.update_genitals()
+
+			icon_state = sanitize_text(string)
 
diff --git a/modular_citadel/code/modules/arousal/organs/genitals.dm b/modular_citadel/code/modules/arousal/organs/genitals.dm
index 9cba98e8..35564daa 100644
--- a/modular_citadel/code/modules/arousal/organs/genitals.dm
+++ b/modular_citadel/code/modules/arousal/organs/genitals.dm
@@ -251,6 +251,8 @@
 		return FALSE
 	if(!getorganslot("anus"))
 		var/obj/item/organ/genital/anus/A = new
+		if(dna.features["butt_size"])
+			A.size = dna.features["butt_size"]
 		A.Insert(src)
 		if(A)
 			A.color = "#[skintone2hex(skin_tone)]"
@@ -443,6 +445,8 @@
 					S = GLOB.breasts_shapes_list[G.shape]
 				if(/obj/item/organ/genital/belly)
 					S = GLOB.breasts_shapes_list[G.shape]
+				if(/obj/item/organ/genital/anus)
+					S = GLOB.breasts_shapes_list[G.shape]
 
 			if(!S || S.icon_state == "none")
 				continue
@@ -461,11 +465,24 @@
 			//Get the icon
 			genital_overlay.icon_state = "[G.slot]_[S.icon_state]_[size]_[aroused_state]_[layertext]"
 			colourcode = S.color_src
+
 			if(G.slot == "belly") //we have a different size system
 				genital_overlay.icon = 'hyperstation/icons/obj/genitals/belly.dmi'
 				genital_overlay.icon_state = "belly_[size]"
 				colourcode = "belly_color"
 
+			if(G.slot == "anus") //we have a different size system
+				genital_overlay.icon = 'hyperstation/icons/obj/genitals/butt.dmi'
+				genital_overlay.icon_state = "butt_[size]"
+				genital_overlay.layer = -FRONT_MUTATIONS_LAYER
+				colourcode = "butt_color"
+				if(use_skintones) //butts are forced a colour, either skin tones, or main colour. how ever, mutants use a darker version, because of their body tone.
+					genital_overlay.color = "#[skintone2hex(H.skin_tone)]"
+					genital_overlay.icon_state = "butt_[size]"
+				else
+					genital_overlay.color = "#[H.dna.features["mcolor"]]"
+					genital_overlay.icon_state = "butt_[size]_m"
+
 			if(S.center)
 				genital_overlay = center_image(genital_overlay, S.dimension_x, S.dimension_y)
 
@@ -488,6 +505,7 @@
 					if("belly_color")
 						genital_overlay.color = "#[H.dna.features["belly_color"]]"
 
+
 			standing += genital_overlay
 
 		if(LAZYLEN(standing))
diff --git a/modular_citadel/code/modules/arousal/organs/genitals_sprite_accessories.dm b/modular_citadel/code/modules/arousal/organs/genitals_sprite_accessories.dm
index ae86c097..8fe929e8 100644
--- a/modular_citadel/code/modules/arousal/organs/genitals_sprite_accessories.dm
+++ b/modular_citadel/code/modules/arousal/organs/genitals_sprite_accessories.dm
@@ -136,7 +136,7 @@
     icon_state = "gaping"
     name = "Gaping"
 
-//BREASTS BE HERE
+//BELLY BE HERE
 /datum/sprite_accessory/belly
 	icon = 'hyperstation/icons/obj/genitals/belly.dmi'
 	icon_state = "belly"
@@ -145,6 +145,15 @@
 	color_src = "belly_color"
 	locked = 0
 
+//BUTT BE HERE
+/datum/sprite_accessory/anus
+	icon = 'hyperstation/icons/obj/genitals/butt.dmi'
+	icon_state = "butt"
+	name = "butt"
+	gender_specific = 0
+	color_src = "butt_color"
+	locked = 0
+
 //BREASTS BE HERE
 /datum/sprite_accessory/breasts
 	icon = 'modular_citadel/icons/obj/genitals/breasts_onmob.dmi'
diff --git a/modular_citadel/code/modules/client/preferences_savefile.dm b/modular_citadel/code/modules/client/preferences_savefile.dm
index e2a7383d..1b1a2997 100644
--- a/modular_citadel/code/modules/client/preferences_savefile.dm
+++ b/modular_citadel/code/modules/client/preferences_savefile.dm
@@ -63,6 +63,8 @@
 	WRITE_FILE(S["feature_has_sheath"], features["sheath_color"])
 	//belly feature
 	WRITE_FILE(S["feature_belly_size"], features["belly_size"])
+	//butt feature
+	WRITE_FILE(S["feature_butt_size"], features["butt_size"])
 	//balls features
 	WRITE_FILE(S["feature_has_balls"], features["has_balls"])
 	WRITE_FILE(S["feature_balls_color"], features["balls_color"])