diff --git a/baystation12.dme b/baystation12.dme
index a37d6f5b96..65dca1f8da 100644
--- a/baystation12.dme
+++ b/baystation12.dme
@@ -1300,6 +1300,7 @@
 #include "code\modules\mob\living\carbon\human\species\outsider\shadow.dm"
 #include "code\modules\mob\living\carbon\human\species\outsider\vox.dm"
 #include "code\modules\mob\living\carbon\human\species\station\golem.dm"
+#include "code\modules\mob\living\carbon\human\species\station\human_subspecies.dm"
 #include "code\modules\mob\living\carbon\human\species\station\monkey.dm"
 #include "code\modules\mob\living\carbon\human\species\station\slime.dm"
 #include "code\modules\mob\living\carbon\human\species\station\station.dm"
diff --git a/code/game/machinery/flasher.dm b/code/game/machinery/flasher.dm
index 5393de59cc..e6fb41193c 100644
--- a/code/game/machinery/flasher.dm
+++ b/code/game/machinery/flasher.dm
@@ -67,25 +67,22 @@
 		if (get_dist(src, O) > src.range)
 			continue
 
+		var/flash_time = strength
 		if (istype(O, /mob/living/carbon/human))
 			var/mob/living/carbon/human/H = O
 			if(!H.eyecheck() <= 0)
 				continue
-
-		if (istype(O, /mob/living/carbon/alien))//So aliens don't get flashed (they have no external eyes)/N
-			continue
-
-		O.Weaken(strength)
-		if (istype(O, /mob/living/carbon/human))
-			var/mob/living/carbon/human/H = O
+			flash_time *= H.species.flash_mod
 			var/obj/item/organ/eyes/E = H.internal_organs_by_name["eyes"]
-			if (E && (E.damage > E.min_bruised_damage && prob(E.damage + 50)))
+			if(!E)
+				return
+			if(E.is_bruised() && prob(E.damage + 50))
 				flick("e_flash", O:flash)
 				E.damage += rand(1, 5)
 		else
 			if(!O.blinded)
 				flick("flash", O:flash)
-
+		O.Weaken(flash_time)
 
 /obj/machinery/flasher/emp_act(severity)
 	if(stat & (BROKEN|NOPOWER))
diff --git a/code/game/objects/items/devices/flash.dm b/code/game/objects/items/devices/flash.dm
index 18826ff806..cfbe33e5fd 100644
--- a/code/game/objects/items/devices/flash.dm
+++ b/code/game/objects/items/devices/flash.dm
@@ -64,30 +64,18 @@
 	var/flashfail = 0
 
 	if(iscarbon(M))
-		var/safety = M:eyecheck()
-		if(safety <= 0)
-			M.Weaken(10)
-			flick("e_flash", M.flash)
-
-			if(ishuman(M) && ishuman(user) && M.stat!=DEAD)
-				if(user.mind && user.mind in revs.current_antagonists)
-					var/revsafe = 0
-					for(var/obj/item/weapon/implant/loyalty/L in M)
-						if(L && L.implanted)
-							revsafe = 1
-							break
-					M.mind_initialize()		//give them a mind datum if they don't have one.
-					if(M.mind.has_been_rev)
-						revsafe = 2
-					if(!revsafe)
-						M.mind.has_been_rev = 1
-						revs.add_antagonist(M.mind)
-					else if(revsafe == 1)
-						user << "<span class='warning'>Something seems to be blocking the flash!</span>"
-					else
-						user << "<span class='warning'>This mind seems resistant to the flash!</span>"
-		else
-			flashfail = 1
+		if(M.stat!=DEAD)
+			var/safety = M:eyecheck()
+			if(safety <= 0)
+				var/flash_strength = 10
+				if(ishuman(M))
+					var/mob/living/carbon/human/H = M
+					flash_strength *= H.species.flash_mod
+				if(flash_strength > 0)
+					M.Weaken(flash_strength)
+					flick("e_flash", M.flash)
+			else
+				flashfail = 1
 
 	else if(issilicon(M))
 		M.Weaken(rand(5,10))
diff --git a/code/modules/mob/living/carbon/human/human_damage.dm b/code/modules/mob/living/carbon/human/human_damage.dm
index 575fa0c531..4155f0981e 100644
--- a/code/modules/mob/living/carbon/human/human_damage.dm
+++ b/code/modules/mob/living/carbon/human/human_damage.dm
@@ -85,9 +85,7 @@
 
 
 /mob/living/carbon/human/adjustBruteLoss(var/amount)
-	if(species && species.brute_mod)
-		amount = amount*species.brute_mod
-
+	amount = amount*species.brute_mod
 	if(amount > 0)
 		take_overall_damage(amount, 0)
 	else
@@ -95,9 +93,7 @@
 	BITSET(hud_updateflag, HEALTH_HUD)
 
 /mob/living/carbon/human/adjustFireLoss(var/amount)
-	if(species && species.burn_mod)
-		amount = amount*species.burn_mod
-
+	amount = amount*species.burn_mod
 	if(amount > 0)
 		take_overall_damage(0, amount)
 	else
@@ -105,9 +101,7 @@
 	BITSET(hud_updateflag, HEALTH_HUD)
 
 /mob/living/carbon/human/proc/adjustBruteLossByPart(var/amount, var/organ_name, var/obj/damage_source = null)
-	if(species && species.brute_mod)
-		amount = amount*species.brute_mod
-
+	amount = amount*species.brute_mod
 	if (organ_name in organs_by_name)
 		var/obj/item/organ/external/O = get_organ(organ_name)
 
@@ -120,9 +114,7 @@
 	BITSET(hud_updateflag, HEALTH_HUD)
 
 /mob/living/carbon/human/proc/adjustFireLossByPart(var/amount, var/organ_name, var/obj/damage_source = null)
-	if(species && species.burn_mod)
-		amount = amount*species.burn_mod
-
+	amount = amount*species.burn_mod
 	if (organ_name in organs_by_name)
 		var/obj/item/organ/external/O = get_organ(organ_name)
 
@@ -205,7 +197,8 @@
 	if(species.flags & NO_BREATHE)
 		oxyloss = 0
 	else
-		..()
+		amount = amount*species.oxy_mod
+		..(amount)
 
 /mob/living/carbon/human/setOxyLoss(var/amount)
 	if(species.flags & NO_BREATHE)
@@ -222,7 +215,8 @@
 	if(species.flags & NO_POISON)
 		toxloss = 0
 	else
-		..()
+		amount = amount*species.toxins_mod
+		..(amount)
 
 /mob/living/carbon/human/setToxLoss(var/amount)
 	if(species.flags & NO_POISON)
@@ -388,14 +382,12 @@ This function restores all organs.
 	switch(damagetype)
 		if(BRUTE)
 			damageoverlaytemp = 20
-			if(species && species.brute_mod)
-				damage = damage*species.brute_mod
+			damage = damage*species.brute_mod
 			if(organ.take_damage(damage, 0, sharp, edge, used_weapon))
 				UpdateDamageIcon()
 		if(BURN)
 			damageoverlaytemp = 20
-			if(species && species.burn_mod)
-				damage = damage*species.burn_mod
+			damage = damage*species.burn_mod
 			if(organ.take_damage(0, damage, sharp, edge, used_weapon))
 				UpdateDamageIcon()
 
diff --git a/code/modules/mob/living/carbon/human/life.dm b/code/modules/mob/living/carbon/human/life.dm
index bcf1100a08..f1cae922e6 100644
--- a/code/modules/mob/living/carbon/human/life.dm
+++ b/code/modules/mob/living/carbon/human/life.dm
@@ -280,7 +280,7 @@
 				Weaken(3)
 				if(!lying)
 					emote("collapse")
-			if(prob(5) && prob(100 * RADIATION_SPEED_COEFFICIENT) && species.name == "Human") //apes go bald
+			if(prob(5) && prob(100 * RADIATION_SPEED_COEFFICIENT) && species.get_bodytype() == "Human") //apes go bald
 				if((h_style != "Bald" || f_style != "Shaved" ))
 					src << "<span class='warning'>Your hair falls out.</span>"
 					h_style = "Bald"
@@ -298,6 +298,7 @@
 				emote("gasp")
 
 		if(damage)
+			damage *= species.radiation_mod
 			adjustToxLoss(damage * RADIATION_SPEED_COEFFICIENT)
 			updatehealth()
 			if(organs.len)
diff --git a/code/modules/mob/living/carbon/human/species/species.dm b/code/modules/mob/living/carbon/human/species/species.dm
index 54e358e96c..e47d7c1087 100644
--- a/code/modules/mob/living/carbon/human/species/species.dm
+++ b/code/modules/mob/living/carbon/human/species/species.dm
@@ -47,8 +47,12 @@
 		/datum/unarmed_attack/bite
 		)
 	var/list/unarmed_attacks = null          // For empty hand harm-intent attack
-	var/brute_mod = 1                        // Physical damage multiplier.
-	var/burn_mod = 1                         // Burn damage multiplier.
+	var/brute_mod =     1                    // Physical damage multiplier.
+	var/burn_mod =      1                    // Burn damage multiplier.
+	var/oxy_mod =       1                    // Oxyloss modifier
+	var/toxins_mod =    1                    // Toxloss modifier
+	var/radiation_mod = 1                    // Radiation modifier
+	var/flash_mod =     1                    // Stun from blindness modifier.
 	var/vision_flags = SEE_SELF              // Same flags as glasses.
 
 	// Death vars.
diff --git a/code/modules/mob/living/carbon/human/species/station/human_subspecies.dm b/code/modules/mob/living/carbon/human/species/station/human_subspecies.dm
new file mode 100644
index 0000000000..b33d4e8ef7
--- /dev/null
+++ b/code/modules/mob/living/carbon/human/species/station/human_subspecies.dm
@@ -0,0 +1,57 @@
+/datum/species/human/gravworlder
+	name = "grav-adapted Human"
+	name_plural = "grav-adapted Humans"
+	blurb = "Heavier and stronger than a baseline human, gravity-adapted people have \
+	thick radiation-resistant skin with a high lead content, denser bones, and recessed \
+	eyes beneath a prominent brow in order to shield them from the glare of a dangerously \
+	bright, alien sun. This comes at the cost of mobility, flexibility, and increased \
+	oxygen requirements to support their robust metabolism."
+	icobase = 'icons/mob/human_races/subspecies/r_gravworlder.dmi'
+
+	flash_mod =     0.9
+	oxy_mod =       1.1
+	radiation_mod = 0.5
+	brute_mod =     0.85
+	slowdown =      1
+
+/datum/species/human/spacer
+	name = "space-adapted Human"
+	name_plural = "space-adapted Humans"
+	blurb = "Lithe and frail, these sickly folk were engineered for work in environments that \
+	lack both light and atmosphere. As such, they're quite resistant to asphyxiation as well as \
+	toxins, but they suffer from weakened bone structure and a marked vulnerability to bright lights."
+	icobase = 'icons/mob/human_races/subspecies/r_spacer.dmi'
+
+	oxy_mod =   0.8
+	toxins_mod =   0.9
+	flash_mod = 1.2
+	brute_mod = 1.1
+	burn_mod =  1.1
+
+/datum/species/human/vatgrown
+	name = "vat-grown Human"
+	name_plural = "vat-grown Humans"
+	blurb = "With cloning on the forefront of human scientific advancement, cheap mass production \
+	of bodies is a very real and rather ethically grey industry. Vat-grown humans tend to be paler than \
+	baseline, with no appendix and fewer inherited genetic disabilities, but a weakened metabolism."
+	icobase = 'icons/mob/human_races/subspecies/r_vatgrown.dmi'
+
+	toxins_mod =   1.1
+	has_organ = list(
+		"heart" =    /obj/item/organ/heart,
+		"lungs" =    /obj/item/organ/lungs,
+		"liver" =    /obj/item/organ/liver,
+		"kidneys" =  /obj/item/organ/kidneys,
+		"brain" =    /obj/item/organ/brain,
+		"eyes" =     /obj/item/organ/eyes
+		)
+
+/*
+// These guys are going to need full resprites of all the suits/etc so I'm going to
+// define them and commit the sprites, but leave the clothing for another day.
+/datum/species/human/chimpanzee
+	name = "uplifted Chimpanzee"
+	name_plural = "uplifted Chimpanzees"
+	blurb = "Ook ook."
+	icobase = 'icons/mob/human_races/subspecies/r_upliftedchimp.dmi'
+*/
diff --git a/code/modules/mob/living/carbon/human/species/station/station.dm b/code/modules/mob/living/carbon/human/species/station/station.dm
index 032cf51db9..c727a9599b 100644
--- a/code/modules/mob/living/carbon/human/species/station/station.dm
+++ b/code/modules/mob/living/carbon/human/species/station/station.dm
@@ -14,6 +14,9 @@
 	spawn_flags = CAN_JOIN
 	appearance_flags = HAS_SKIN_TONE | HAS_LIPS | HAS_UNDERWEAR | HAS_EYE_COLOR
 
+/datum/species/human/get_bodytype()
+	return "Human"
+
 /datum/species/unathi
 	name = "Unathi"
 	name_plural = "Unathi"
diff --git a/icons/mob/human_races/subspecies/r_gravworlder.dmi b/icons/mob/human_races/subspecies/r_gravworlder.dmi
new file mode 100644
index 0000000000..d63cc5526c
Binary files /dev/null and b/icons/mob/human_races/subspecies/r_gravworlder.dmi differ
diff --git a/icons/mob/human_races/subspecies/r_spacer.dmi b/icons/mob/human_races/subspecies/r_spacer.dmi
new file mode 100644
index 0000000000..ceb27d2904
Binary files /dev/null and b/icons/mob/human_races/subspecies/r_spacer.dmi differ
diff --git a/icons/mob/human_races/subspecies/r_upliftedchimp.dmi b/icons/mob/human_races/subspecies/r_upliftedchimp.dmi
new file mode 100644
index 0000000000..eb26c817cc
Binary files /dev/null and b/icons/mob/human_races/subspecies/r_upliftedchimp.dmi differ
diff --git a/icons/mob/human_races/subspecies/r_vatgrown.dmi b/icons/mob/human_races/subspecies/r_vatgrown.dmi
new file mode 100644
index 0000000000..8cb165b127
Binary files /dev/null and b/icons/mob/human_races/subspecies/r_vatgrown.dmi differ