It seems that the 7x "a Kromzek warrior" and 1x "a Kromzek Captain" have been spawned for days southwest of Siren's Grotto zone line in Western Wastes.
These guys should only be spawned in response to Scout Charisa being given the Scout Tools and should despawn after a while. I'm having trouble finding information about how long they are supposed to stay spawned, I guess most people left after getting their item turned into the Scout (who also despawns)
http://wiki.project1999.com/Leuz%27s_Task