diff --git a/code/__DEFINES/traits.dm b/code/__DEFINES/traits.dm
index e7e63959..e674a78a 100644
--- a/code/__DEFINES/traits.dm
+++ b/code/__DEFINES/traits.dm
@@ -162,7 +162,9 @@
 #define TRAIT_THERMAL_VISION    "thermal_vision"
 #define TRAIT_CUM_PLUS			"cum_plus"
 #define TRAIT_NEVER_CLONE       "donotclone"
-
+#define TRAIT_COLDBLOODED		"coldblooded"	// Your body is literal room temperature. Does not make you immune to the temp.
+#define TRAIT_FLIMSY		"flimsy" //you have 20% less maxhealth
+#define TRAIT_TOUGH		"tough" //you have 10% more maxhealth
 
 // common trait sources
 #define TRAIT_GENERIC "generic"
diff --git a/code/datums/traits/good.dm b/code/datums/traits/good.dm
index 603951c8..64cf2df7 100644
--- a/code/datums/traits/good.dm
+++ b/code/datums/traits/good.dm
@@ -204,6 +204,25 @@
 	var/mob/living/M = quirk_holder
 	M.blood_ratio = 1
 
+/datum/quirk/tough
+	name = "Tough"
+	desc = "Your body is abnormally enduring and can take 10% more damage."
+	value = 2
+	mob_trait = TRAIT_TOUGH
+	medical_record_text = "Patient has an abnormally high capacity for injury."
+	gain_text = "<span class='notice'>You feel very sturdy.</span>"
+	lose_text = "<span class='notice'>You feel less sturdy.</span>"
+	var/healthchange = 0
+
+/datum/quirk/tough/add()
+	var/mob/living/carbon/human/H = quirk_holder
+	healthchange = H.maxHealth * 0.1
+	H.maxHealth = H.maxHealth * 1.1
+
+/datum/quirk/tough/remove()
+	var/mob/living/carbon/human/H = quirk_holder
+	H.maxHealth += healthchange
+
 /datum/quirk/draconicspeaker
 	name = "Draconic speaker"
 	desc = "Due to your time spent around lizards, you can speak Draconic!"
diff --git a/code/datums/traits/negative.dm b/code/datums/traits/negative.dm
index a690c63f..cfb1341f 100644
--- a/code/datums/traits/negative.dm
+++ b/code/datums/traits/negative.dm
@@ -373,4 +373,48 @@
 	desc = "You have filed a Do Not Clone order, stating that you do not wish to be cloned. You can still be revived by other means."
 	value = -2
 	mob_trait = TRAIT_NEVER_CLONE
-	medical_record_text = "Patient has a DNC (Do not clone) order on file, and cannot be cloned as a result."
\ No newline at end of file
+	medical_record_text = "Patient has a DNC (Do not clone) order on file, and cannot be cloned as a result."
+
+//Port from Citadel
+/datum/quirk/blindness
+	name = "Blind"
+	desc = "You are completely blind, nothing can counteract this."
+	value = -4
+	gain_text = "<span class='danger'>You can't see anything.</span>"
+	lose_text = "<span class='notice'>You miraculously gain back your vision.</span>"
+	medical_record_text = "Patient has permanent blindness."
+
+/datum/quirk/blindness/add()
+	quirk_holder.become_blind(ROUNDSTART_TRAIT)
+
+/datum/quirk/blindness/remove()
+	quirk_holder?.cure_blind(ROUNDSTART_TRAIT)
+
+//Port from Citadel
+/datum/quirk/coldblooded
+	name = "Cold-blooded"
+	desc = "Your body doesn't create its own internal heat, requiring external heat regulation."
+	value = -2
+	medical_record_text = "Patient is ectothermic."
+	mob_trait = TRAIT_COLDBLOODED
+	gain_text = "<span class='notice'>You feel cold-blooded.</span>"
+	lose_text = "<span class='notice'>You feel more warm-blooded.</span>"
+
+/datum/quirk/flimsy
+	name = "Flimsy"
+	desc = "Your body is a little more fragile then most, decreasing total health by 20%."
+	value = -2
+	medical_record_text = "Patient has abnormally low capacity for injury."
+	mob_trait = TRAIT_FLIMSY
+	gain_text = "<span class='notice'>You feel like you could break with a single hit."
+	lose_text = "<span class='notice'>You feel more durable."
+	var/healthchange = 0
+
+/datum/quirk/flimsy/add()
+	var/mob/living/carbon/human/H = quirk_holder
+	healthchange = H.maxHealth * 0.2
+	H.maxHealth = H.maxHealth * 0.8
+
+/datum/quirk/flimsy/remove() //how do admins even remove traits?
+	var/mob/living/carbon/human/H = quirk_holder
+	H.maxHealth += healthchange