adds inherent factions

code/modules/mob/living/carbon/human/species/_species.dm

@@ -84,6 +84,7 @@
 	var/single_gib_type = /obj/effect/decal/cleanable/blood/gibs
 	var/remains_type = /obj/effect/decal/remains/human //What sort of remains is left behind when the species dusts
 	var/base_color      //Used when setting species.
+	var/list/inherent_factions
 
 	//Used in icon caching.
 	var/race_key = 0
@@ -285,11 +286,19 @@
 		H.hud_used.update_locked_slots()
 	H.ventcrawler = ventcrawler
 
+	if(inherent_factions)
+		for(var/i in inherent_factions)
+			H.faction += i //Using +=/-= for this in case you also gain the faction from a different source.
+
 /datum/species/proc/on_species_loss(mob/living/carbon/human/H)
 	if(H.butcher_results) //clear it out so we don't butcher a actual human.
 		H.butcher_results = null
 	H.ventcrawler = initial(H.ventcrawler)
 
+	if(inherent_factions)
+		for(var/i in inherent_factions)
+			H.faction -= i
+
 /datum/species/proc/updatespeciescolor(mob/living/carbon/human/H) //Handles changing icobase for species that have multiple skin colors.
 	return
 

code/modules/mob/living/carbon/human/species/slime.dm

@@ -13,6 +13,7 @@
 	icobase = 'icons/mob/human_races/r_slime.dmi'
 	deform = 'icons/mob/human_races/r_slime.dmi'
 	remains_type = /obj/effect/decal/remains/slime
+	inherent_factions = list("slime")
 
 	// More sensitive to the cold
 	cold_level_1 = 280

code/modules/mob/living/simple_animal/slime/life.dm

@@ -314,7 +314,7 @@
 
 				for(var/mob/living/L in view(7,src))
 
-					if(isslime(L) || isslimeperson(L) || L.stat == DEAD) // Ignore other slimes, slime people, and dead mobs
+					if(L.stat == DEAD) // Ignore dead mobs
 						continue
 
 					if(L in Friends) // No eating friends!