diff --git a/code/__defines/species_languages.dm b/code/__defines/species_languages.dm
index fd1ab61bf3b..039622554ae 100644
--- a/code/__defines/species_languages.dm
+++ b/code/__defines/species_languages.dm
@@ -6,6 +6,7 @@
 #define NO_SLIP           0x10   // Cannot fall over.
 #define NO_POISON         0x20   // Cannot not suffer toxloss.
 #define IS_PLANT          0x40   // Is a treeperson.
+#define NO_MINOR_CUT      0x80   // Can step on broken glass with no ill-effects. Either thick skin (diona/vox), cut resistant (slimes) or incorporeal (shadows)
 // unused: 0x8000 - higher than this will overflow
 
 // Species spawn flags
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 a5035b4ffa0..87fe13fb1da 100644
--- a/code/modules/mob/living/carbon/human/species/outsider/shadow.dm
+++ b/code/modules/mob/living/carbon/human/species/outsider/shadow.dm
@@ -18,7 +18,7 @@
 	remains_type = /obj/effect/decal/cleanable/ash
 	death_message = "dissolves into ash..."
 
-	flags = NO_BLOOD | NO_SCAN | NO_SLIP | NO_POISON
+	flags = NO_BLOOD | NO_SCAN | NO_SLIP | NO_POISON | NO_MINOR_CUT
 	spawn_flags = IS_RESTRICTED
 
 /datum/species/shadow/handle_death(var/mob/living/carbon/human/H)
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 99e989e02e9..cd8d36edb61 100644
--- a/code/modules/mob/living/carbon/human/species/outsider/vox.dm
+++ b/code/modules/mob/living/carbon/human/species/outsider/vox.dm
@@ -31,7 +31,7 @@
 	poison_type = "oxygen"
 	siemens_coefficient = 0.2
 
-	flags = NO_SCAN
+	flags = NO_SCAN | NO_MINOR_CUT
 	spawn_flags = CAN_JOIN | IS_WHITELISTED
 	appearance_flags = HAS_EYE_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 2ad9a8d2c4b..fae7d834e5c 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_BREATHE | NO_PAIN | NO_BLOOD | NO_SCAN | NO_POISON
+	flags = NO_BREATHE | NO_PAIN | NO_BLOOD | NO_SCAN | NO_POISON | NO_MINOR_CUT
 	spawn_flags = IS_RESTRICTED
 	siemens_coefficient = 0
 
diff --git a/code/modules/mob/living/carbon/human/species/station/slime.dm b/code/modules/mob/living/carbon/human/species/station/slime.dm
index b40497b2adf..bb5b921710f 100644
--- a/code/modules/mob/living/carbon/human/species/station/slime.dm
+++ b/code/modules/mob/living/carbon/human/species/station/slime.dm
@@ -6,11 +6,11 @@
 	icobase = 'icons/mob/human_races/r_slime.dmi'
 	deform = 'icons/mob/human_races/r_slime.dmi'
 
-	language = "Sol Common" //todo?
+	language = null //todo?
 	unarmed_types = list(/datum/unarmed_attack/slime_glomp)
-	flags = NO_SCAN | NO_SLIP | NO_BREATHE
+	flags = NO_SCAN | NO_SLIP | NO_BREATHE | NO_MINOR_CUT
 	spawn_flags = IS_RESTRICTED
-	siemens_coefficient = 3
+	siemens_coefficient = 3 //conductive
 	darksight = 3
 
 	blood_color = "#05FF9B"
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 525862f09f4..b0d68f71188 100644
--- a/code/modules/mob/living/carbon/human/species/station/station.dm
+++ b/code/modules/mob/living/carbon/human/species/station/station.dm
@@ -206,7 +206,7 @@
 
 	body_temperature = T0C + 15		//make the plant people have a bit lower body temperature, why not
 
-	flags = NO_BREATHE | NO_SCAN | IS_PLANT | NO_BLOOD | NO_PAIN | NO_SLIP
+	flags = NO_BREATHE | NO_SCAN | IS_PLANT | NO_BLOOD | NO_PAIN | NO_SLIP | NO_MINOR_CUT
 	spawn_flags = CAN_JOIN | 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 f534196f385..d51d0b7d6b1 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
@@ -25,7 +25,7 @@
 	cold_level_2 = -1
 	cold_level_3 = -1
 
-	flags =  NO_BREATHE | NO_SCAN | NO_PAIN | NO_SLIP | NO_POISON
+	flags =  NO_BREATHE | NO_SCAN | NO_PAIN | NO_SLIP | NO_POISON | NO_MINOR_CUT
 	spawn_flags = IS_RESTRICTED
 
 	reagent_tag = IS_XENOS