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This is like a grot klan with big grots and grots.
5 big grots
to make it a 600pt army I added a 12 big grots(slugga boyz).
So I'm assuming the Grot Bigboss is a Nob and the Big Grots are Ork Boyz?
I'm not familiar with Grot Kommisars but they sound cool. Do they actually keep the grot mobs from "Going to ground?"