diff --git a/code/__defines/species_languages.dm b/code/__defines/species_languages.dm
index 7ad84b4a79..88f4309e36 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 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
 // unused: 0x8000 - higher than this will overflow
 
 // Species spawn flags
diff --git a/code/modules/mob/living/carbon/human/life.dm b/code/modules/mob/living/carbon/human/life.dm
index 9a82518794..96f5dddc42 100644
--- a/code/modules/mob/living/carbon/human/life.dm
+++ b/code/modules/mob/living/carbon/human/life.dm
@@ -233,7 +233,7 @@
 			set_light(0)
 	else
 		if(species.appearance_flags & RADIATION_GLOWS)
-			set_light(max(1,min(10,radiation/10)), max(1,min(20,radiation/20)), species.get_flesh_colour(src))
+			set_light(max(1,min(5,radiation/15)), max(1,min(10,radiation/25)), species.get_flesh_colour(src))
 		// END DOGSHIT SNOWFLAKE
 
 		var/obj/item/organ/internal/diona/nutrients/rad_organ = locate() in internal_organs
@@ -248,6 +248,10 @@
 			updatehealth()
 			return
 
+		var/obj/item/organ/internal/brain/slime/core = locate() in internal_organs
+		if(core)
+			return
+
 		var/damage = 0
 		radiation -= 1 * RADIATION_SPEED_COEFFICIENT
 		if(prob(25))
@@ -903,7 +907,7 @@
 			Paralyse(3)
 
 		if(hallucination)
-			if(hallucination >= 20 && !(species.flags & (NO_POISON|IS_PLANT)) )
+			if(hallucination >= 20 && !(species.flags & (NO_POISON|IS_PLANT|NO_HALLUCINATION)) )
 				if(prob(3))
 					fake_attack(src)
 				if(!handling_hal)
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 11384984d4..cc656dccba 100644
--- a/code/modules/mob/living/carbon/human/species/station/prometheans.dm
+++ b/code/modules/mob/living/carbon/human/species/station/prometheans.dm
@@ -20,7 +20,7 @@ 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
+	flags =            NO_SCAN | NO_SLIP | NO_MINOR_CUT | NO_HALLUCINATION
 	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