diff --git a/code/__defines/species_languages.dm b/code/__defines/species_languages.dm
index dd5c817641..1e4ca25122 100644
--- a/code/__defines/species_languages.dm
+++ b/code/__defines/species_languages.dm
@@ -1,15 +1,16 @@
// Species flags.
-#define NO_MINOR_CUT 0x1 // Can step on broken glass with no ill-effects. Either thick skin (diona), cut resistant (slimes) or incorporeal (shadows)
-#define IS_PLANT 0x2 // Is a treeperson.
-#define NO_SCAN 0x4 // Cannot be scanned in a DNA machine/genome-stolen.
-#define NO_PAIN 0x8 // Cannot suffer halloss/recieves deceptive health indicator.
-#define NO_SLIP 0x10 // Cannot fall over.
-#define NO_POISON 0x20 // Cannot not suffer toxloss.
-#define NO_EMBED 0x40 // Can step on broken glass with no ill-effects and cannot have shrapnel embedded in it.
-#define NO_HALLUCINATION 0x80 // Don't hallucinate, ever
-#define NO_BLOOD 0x100 // Never bleed, never show blood amount
-#define UNDEAD 0x200 // Various things that living things don't do, mostly for skeletons
-#define NO_INFECT 0x400 // Don't allow infections in limbs or organs, similar to IS_PLANT, without other strings.
+#define NO_MINOR_CUT 0x1 // Can step on broken glass with no ill-effects. Either thick skin (diona), cut resistant (slimes) or incorporeal (shadows)
+#define IS_PLANT 0x2 // Is a treeperson.
+#define NO_SCAN 0x4 // Cannot be scanned in a DNA machine/genome-stolen.
+#define NO_PAIN 0x8 // Cannot suffer halloss/recieves deceptive health indicator.
+#define NO_SLIP 0x10 // Cannot fall over.
+#define NO_POISON 0x20 // Cannot not suffer toxloss.
+#define NO_EMBED 0x40 // Can step on broken glass with no ill-effects and cannot have shrapnel embedded in it.
+#define NO_HALLUCINATION 0x80 // Don't hallucinate, ever
+#define NO_BLOOD 0x100 // Never bleed, never show blood amount
+#define UNDEAD 0x200 // Various things that living things don't do, mostly for skeletons
+#define NO_INFECT 0x400 // Don't allow infections in limbs or organs, similar to IS_PLANT, without other strings.
+#define NO_DEFIB 0x800 // Don't allow them to be defibbed
// unused: 0x8000 - higher than this will overflow
// Species EMP vuln for carbons
diff --git a/code/game/objects/items/devices/defib.dm b/code/game/objects/items/devices/defib.dm
index 80a015e7bf..680bebf6e9 100644
--- a/code/game/objects/items/devices/defib.dm
+++ b/code/game/objects/items/devices/defib.dm
@@ -271,8 +271,8 @@
//Checks for various conditions to see if the mob is revivable
/obj/item/weapon/shockpaddles/proc/can_defib(mob/living/carbon/human/H) //This is checked before doing the defib operation
- if((H.species.flags & NO_SCAN))
- return "buzzes, \"Unrecogized physiology. Operation aborted.\""
+ if((H.species.flags & NO_DEFIB))
+ return "buzzes, \"Incompatible physiology. Operation aborted.\""
else if(H.isSynthetic() && !use_on_synthetic)
return "buzzes, \"Synthetic Body. Operation aborted.\""
else if(!H.isSynthetic() && use_on_synthetic)
diff --git a/code/modules/client/preference_setup/general/03_body.dm b/code/modules/client/preference_setup/general/03_body.dm
index 6ecbf3fbb1..e482079550 100644
--- a/code/modules/client/preference_setup/general/03_body.dm
+++ b/code/modules/client/preference_setup/general/03_body.dm
@@ -879,6 +879,8 @@ var/global/list/valid_bloodtypes = list("A+", "A-", "B+", "B-", "AB+", "AB-", "O
dat += "Does not have a respiratory system."
if(current_species.flags & NO_SCAN)
dat += "Does not have DNA."
+ if(current_species.flags & NO_DEFIB)
+ dat += "Cannot be defibrillated."
if(current_species.flags & NO_PAIN)
dat += "Does not feel pain."
if(current_species.flags & NO_SLIP)
diff --git a/code/modules/mob/living/carbon/human/species/outsider/event.dm b/code/modules/mob/living/carbon/human/species/outsider/event.dm
index a156d2dc9f..3566010050 100644
--- a/code/modules/mob/living/carbon/human/species/outsider/event.dm
+++ b/code/modules/mob/living/carbon/human/species/outsider/event.dm
@@ -199,6 +199,9 @@ Variables you may want to make use of are:
/datum/species/event1/proc/toggle_cloning()
flags ^= NO_SCAN
+
+/datum/species/event1/proc/toggle_defibbing()
+ flags ^= NO_DEFIB
/datum/species/event1/proc/toggle_pain()
flags ^= NO_PAIN
diff --git a/code/modules/mob/living/carbon/human/species/outsider/shadow.dm b/code/modules/mob/living/carbon/human/species/outsider/shadow.dm
index d0f40f693d..dd03ab4bbc 100644
--- a/code/modules/mob/living/carbon/human/species/outsider/shadow.dm
+++ b/code/modules/mob/living/carbon/human/species/outsider/shadow.dm
@@ -20,7 +20,7 @@
remains_type = /obj/effect/decal/cleanable/ash
death_message = "dissolves into ash..."
- flags = NO_SCAN | NO_SLIP | NO_POISON | NO_MINOR_CUT
+ flags = NO_SCAN | NO_SLIP | NO_POISON | NO_MINOR_CUT | NO_DEFIB
spawn_flags = SPECIES_IS_RESTRICTED
genders = list(NEUTER)
diff --git a/code/modules/mob/living/carbon/human/species/outsider/skeleton.dm b/code/modules/mob/living/carbon/human/species/outsider/skeleton.dm
index 0f8837460c..d8a5577e37 100644
--- a/code/modules/mob/living/carbon/human/species/outsider/skeleton.dm
+++ b/code/modules/mob/living/carbon/human/species/outsider/skeleton.dm
@@ -11,7 +11,7 @@
max_age = 110
health_hud_intensity = 1.5
- flags = NO_SCAN | NO_PAIN | NO_SLIP | NO_POISON | NO_MINOR_CUT | NO_BLOOD | UNDEAD
+ flags = NO_SCAN | NO_PAIN | NO_SLIP | NO_POISON | NO_MINOR_CUT | NO_BLOOD | UNDEAD | NO_DEFIB
spawn_flags = SPECIES_IS_RESTRICTED
appearance_flags = null
diff --git a/code/modules/mob/living/carbon/human/species/outsider/vox.dm b/code/modules/mob/living/carbon/human/species/outsider/vox.dm
index 1e0c28ccc3..b29bead4f9 100644
--- a/code/modules/mob/living/carbon/human/species/outsider/vox.dm
+++ b/code/modules/mob/living/carbon/human/species/outsider/vox.dm
@@ -46,7 +46,7 @@
poison_type = "oxygen"
siemens_coefficient = 0.2
- flags = NO_SCAN
+ flags = NO_SCAN | NO_DEFIB
spawn_flags = SPECIES_IS_WHITELISTED
appearance_flags = HAS_EYE_COLOR | HAS_HAIR_COLOR
diff --git a/code/modules/mob/living/carbon/human/species/station/golem.dm b/code/modules/mob/living/carbon/human/species/station/golem.dm
index 3b09166813..d2bc9dc1dd 100644
--- a/code/modules/mob/living/carbon/human/species/station/golem.dm
+++ b/code/modules/mob/living/carbon/human/species/station/golem.dm
@@ -7,7 +7,7 @@
language = "Sol Common" //todo?
unarmed_types = list(/datum/unarmed_attack/stomp, /datum/unarmed_attack/kick, /datum/unarmed_attack/punch)
- flags = NO_PAIN | NO_SCAN | NO_POISON | NO_MINOR_CUT
+ flags = NO_PAIN | NO_SCAN | NO_POISON | NO_MINOR_CUT | NO_DEFIB
spawn_flags = SPECIES_IS_RESTRICTED
siemens_coefficient = 0
diff --git a/code/modules/mob/living/carbon/human/species/station/prometheans.dm b/code/modules/mob/living/carbon/human/species/station/prometheans.dm
index d5e7710677..6f7615c6fd 100644
--- a/code/modules/mob/living/carbon/human/species/station/prometheans.dm
+++ b/code/modules/mob/living/carbon/human/species/station/prometheans.dm
@@ -25,7 +25,7 @@ var/datum/species/shapeshifter/promethean/prometheans
bump_flag = SLIME
swap_flags = MONKEY|SLIME|SIMPLE_ANIMAL
push_flags = MONKEY|SLIME|SIMPLE_ANIMAL
- flags = NO_SCAN | NO_SLIP | NO_MINOR_CUT | NO_HALLUCINATION | NO_INFECT
+ flags = NO_SCAN | NO_SLIP | NO_MINOR_CUT | NO_HALLUCINATION | NO_INFECT | NO_DEFIB
appearance_flags = HAS_SKIN_COLOR | HAS_EYE_COLOR | HAS_HAIR_COLOR | RADIATION_GLOWS | HAS_UNDERWEAR
spawn_flags = SPECIES_CAN_JOIN | SPECIES_IS_WHITELISTED
health_hud_intensity = 2
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 6e06efef0c..bd5ff8a5d9 100644
--- a/code/modules/mob/living/carbon/human/species/station/station.dm
+++ b/code/modules/mob/living/carbon/human/species/station/station.dm
@@ -521,7 +521,7 @@
body_temperature = T0C + 15 //make the plant people have a bit lower body temperature, why not
- flags = NO_SCAN | IS_PLANT | NO_PAIN | NO_SLIP | NO_MINOR_CUT
+ flags = NO_SCAN | IS_PLANT | NO_PAIN | NO_SLIP | NO_MINOR_CUT | NO_DEFIB
spawn_flags = SPECIES_CAN_JOIN | SPECIES_IS_WHITELISTED
blood_color = "#004400"
diff --git a/code/modules/mob/living/carbon/human/species/xenomorphs/alien_species.dm b/code/modules/mob/living/carbon/human/species/xenomorphs/alien_species.dm
index 4809853f00..425a72185c 100644
--- a/code/modules/mob/living/carbon/human/species/xenomorphs/alien_species.dm
+++ b/code/modules/mob/living/carbon/human/species/xenomorphs/alien_species.dm
@@ -24,7 +24,7 @@
cold_level_2 = -1
cold_level_3 = -1
- flags = NO_SCAN | NO_PAIN | NO_SLIP | NO_POISON | NO_MINOR_CUT | NO_INFECT
+ flags = NO_SCAN | NO_PAIN | NO_SLIP | NO_POISON | NO_MINOR_CUT | NO_INFECT | NO_DEFIB
spawn_flags = SPECIES_IS_RESTRICTED
reagent_tag = IS_XENOS