diff --git a/code/game/atoms_movable.dm b/code/game/atoms_movable.dm
index b7210f22a3..e4bd3b85ea 100644
--- a/code/game/atoms_movable.dm
+++ b/code/game/atoms_movable.dm
@@ -1,6 +1,6 @@
 /atom/movable
 	layer = 3
-	appearance_flags = TILE_BOUND
+	appearance_flags = TILE_BOUND|PIXEL_SCALE
 	var/last_move = null
 	var/anchored = 0
 	// var/elevation = 2    - not used anywhere
@@ -15,7 +15,7 @@
 	var/moved_recently = 0
 	var/mob/pulledby = null
 	var/item_state = null // Used to specify the item state for the on-mob overlays.
-
+	var/icon_scale = 1 // Used to scale icons up or down in update_transform().
 	var/auto_init = 1
 
 /atom/movable/New()
@@ -296,3 +296,12 @@
 		return null
 	return text2num(pickweight(candidates))
 
+/atom/movable/proc/update_transform()
+	var/matrix/M = matrix()
+	M.Scale(icon_scale)
+	src.transform = M
+
+// Use this to set the object's scale.
+/atom/movable/proc/adjust_scale(new_scale)
+	icon_scale = new_scale
+	update_transform()
diff --git a/code/modules/client/preference_setup/traits/trait_defines.dm b/code/modules/client/preference_setup/traits/trait_defines.dm
index 0431ac611b..86b8ede6f7 100644
--- a/code/modules/client/preference_setup/traits/trait_defines.dm
+++ b/code/modules/client/preference_setup/traits/trait_defines.dm
@@ -72,6 +72,25 @@
 	Regardless, you find it quite difficult to land shots where you wanted them to go."
 	modifier_type = /datum/modifier/trait/inaccurate
 
+/datum/trait/modifier/physical/smaller
+	name = "Smaller"
+	modifier_type = /datum/modifier/trait/smaller
+	mutually_exclusive = list(/datum/trait/modifier/physical/small, /datum/trait/modifier/physical/large, /datum/trait/modifier/physical/larger)
+
+/datum/trait/modifier/physical/small
+	name = "Small"
+	modifier_type = /datum/modifier/trait/small
+	mutually_exclusive = list(/datum/trait/modifier/physical/smaller, /datum/trait/modifier/physical/large, /datum/trait/modifier/physical/larger)
+
+/datum/trait/modifier/physical/large
+	name = "Large"
+	modifier_type = /datum/modifier/trait/large
+	mutually_exclusive = list(/datum/trait/modifier/physical/smaller, /datum/trait/modifier/physical/small, /datum/trait/modifier/physical/larger)
+
+/datum/trait/modifier/physical/larger
+	name = "Larger"
+	modifier_type = /datum/modifier/trait/larger
+	mutually_exclusive = list(/datum/trait/modifier/physical/smaller, /datum/trait/modifier/physical/small, /datum/trait/modifier/physical/large)
 
 // These two traits might be borderline, feel free to remove if they get abused.
 /datum/trait/modifier/physical/high_metabolism
diff --git a/code/modules/mob/_modifiers/modifiers.dm b/code/modules/mob/_modifiers/modifiers.dm
index ee6d914fa6..3facabe6f9 100644
--- a/code/modules/mob/_modifiers/modifiers.dm
+++ b/code/modules/mob/_modifiers/modifiers.dm
@@ -41,6 +41,7 @@
 	var/accuracy						// Positive numbers makes hitting things with guns easier, negatives make it harder.  Each point makes it 15% easier or harder, just like evasion.
 	var/accuracy_dispersion				// Positive numbers make gun firing cover a wider tile range, and therefore more inaccurate.  Negatives help negate dispersion penalties.
 	var/metabolism_percent				// Adjusts the mob's metabolic rate, which affects reagent processing.  Won't affect mobs without reagent processing.
+	var/icon_scale_percent				// Makes the holder's icon get scaled up or down.
 
 /datum/modifier/New(var/new_holder, var/new_origin)
 	holder = new_holder
@@ -62,6 +63,8 @@
 	holder.modifiers.Remove(src)
 	if(mob_overlay_state) // We do this after removing ourselves from the list so that the overlay won't remain.
 		holder.update_modifier_visuals()
+	if(icon_scale_percent) // Correct the scaling.
+		holder.update_transform()
 	qdel(src)
 
 // Override this for special effects when it gets removed.
@@ -117,6 +120,8 @@
 	modifiers.Add(mod)
 	if(mod.mob_overlay_state)
 		update_modifier_visuals()
+	if(mod.icon_scale_percent)
+		update_transform()
 
 	return mod
 
@@ -198,6 +203,8 @@
 		effects += "Your metabolism is [metabolism_percent > 1.0 ? "faster" : "slower"], \
 		causing reagents in your body to process, and hunger to occur [multipler_to_percentage(metabolism_percent, TRUE)] [metabolism_percent > 1.0 ? "faster" : "slower"]."
 
+	if(!isnull(icon_scale_percent))
+		effects += "Your appearance is [multipler_to_percentage(icon_scale_percent, TRUE)] [icon_scale_percent > 1 ? "larger" : "smaller"]."
 
 	return jointext(effects, "<br>")
 
diff --git a/code/modules/mob/_modifiers/traits.dm b/code/modules/mob/_modifiers/traits.dm
index 824343c41c..3e9e8278e4 100644
--- a/code/modules/mob/_modifiers/traits.dm
+++ b/code/modules/mob/_modifiers/traits.dm
@@ -58,4 +58,28 @@
 	desc = "Your body's metabolism is slower than average."
 
 	metabolism_percent = 0.5
-	incoming_healing_percent = 0.6
\ No newline at end of file
+	incoming_healing_percent = 0.6
+
+/datum/modifier/trait/larger
+	name = "Larger"
+	desc = "Your body is larger than average."
+
+	icon_scale_percent = 1.2
+
+/datum/modifier/trait/large
+	name = "Large"
+	desc = "Your body is a bit larger than average."
+
+	icon_scale_percent = 1.1
+
+/datum/modifier/trait/small
+	name = "Small"
+	desc = "Your body is a bit smaller than average."
+
+	icon_scale_percent = 0.95
+
+/datum/modifier/trait/smaller
+	name = "Smaller"
+	desc = "Your body is smaller than average."
+
+	icon_scale_percent = 0.9
\ No newline at end of file
diff --git a/code/modules/mob/living/carbon/human/human.dm b/code/modules/mob/living/carbon/human/human.dm
index 1f5cca7daf..92ea71f829 100644
--- a/code/modules/mob/living/carbon/human/human.dm
+++ b/code/modules/mob/living/carbon/human/human.dm
@@ -1134,6 +1134,9 @@
 	if(species.default_language)
 		add_language(species.default_language)
 
+	if(species.icon_scale != 1)
+		update_transform()
+
 	if(species.base_color && default_colour)
 		//Apply colour.
 		r_skin = hex2num(copytext(species.base_color,2,4))
diff --git a/code/modules/mob/living/carbon/human/human_defines.dm b/code/modules/mob/living/carbon/human/human_defines.dm
index beb9170429..fbb98c3f98 100644
--- a/code/modules/mob/living/carbon/human/human_defines.dm
+++ b/code/modules/mob/living/carbon/human/human_defines.dm
@@ -29,7 +29,6 @@
 	var/g_synth							//Same as above
 	var/b_synth							//Same as above
 
-	var/size_multiplier = 1 //multiplier for the mob's icon size
 	var/damage_multiplier = 1 //multiplies melee combat damage
 	var/icon_update = 1 //whether icon updating shall take place
 
diff --git a/code/modules/mob/living/carbon/human/species/species.dm b/code/modules/mob/living/carbon/human/species/species.dm
index 23f8249bda..61bded2e15 100644
--- a/code/modules/mob/living/carbon/human/species/species.dm
+++ b/code/modules/mob/living/carbon/human/species/species.dm
@@ -30,6 +30,8 @@
 	var/tail_animation                                   // If set, the icon to obtain tail animation states from.
 	var/tail_hair
 
+	var/icon_scale = 1                                   // Makes the icon larger/smaller.
+
 	var/race_key = 0       	                             // Used for mob icon cache string.
 	var/icon/icon_template                               // Used for mob icon generation for non-32x32 species.
 	var/mob_size	= MOB_MEDIUM
diff --git a/code/modules/mob/living/carbon/human/update_icons.dm b/code/modules/mob/living/carbon/human/update_icons.dm
index e097804274..ebaa6866e0 100644
--- a/code/modules/mob/living/carbon/human/update_icons.dm
+++ b/code/modules/mob/living/carbon/human/update_icons.dm
@@ -159,16 +159,29 @@ Please contact me on #coderbus IRC. ~Carn x
 				for(var/inner_entry in entry)
 					overlays += inner_entry
 
+	update_transform()
+
+/mob/living/carbon/human/update_transform()
+	// First, get the correct size.
+	var/desired_scale = icon_scale
+
+	desired_scale *= species.icon_scale
+
+	for(var/datum/modifier/M in modifiers)
+		if(!isnull(M.icon_scale_percent))
+			desired_scale *= M.icon_scale_percent
+
+	// Regular stuff again.
 	if(lying && !species.prone_icon) //Only rotate them if we're not drawing a specific icon for being prone.
 		var/matrix/M = matrix()
 		M.Turn(90)
-		M.Scale(size_multiplier)
+		M.Scale(desired_scale)
 		M.Translate(1,-6)
 		src.transform = M
 	else
 		var/matrix/M = matrix()
-		M.Scale(size_multiplier)
-		M.Translate(0, 16*(size_multiplier-1))
+		M.Scale(desired_scale)
+		M.Translate(0, 16*(desired_scale-1))
 		src.transform = M
 
 var/global/list/damage_icon_parts = list()
diff --git a/code/modules/mob/living/living.dm b/code/modules/mob/living/living.dm
index b87eac5a1d..c6fd9b20e9 100644
--- a/code/modules/mob/living/living.dm
+++ b/code/modules/mob/living/living.dm
@@ -1004,3 +1004,17 @@ default behaviour is:
 // Called by job_controller.
 /mob/living/proc/equip_post_job()
 	return
+
+
+/mob/living/update_transform()
+	// First, get the correct size.
+	var/desired_scale = icon_scale
+	for(var/datum/modifier/M in modifiers)
+		if(!isnull(M.icon_scale_percent))
+			desired_scale *= M.icon_scale_percent
+
+	// Now for the regular stuff.
+	var/matrix/M = matrix()
+	M.Scale(desired_scale)
+	M.Translate(0, 16*(desired_scale-1))
+	src.transform = M
\ No newline at end of file