It's easy for Gren to work up some rage-- his default state of being is basically low-level pissed off, kind of like the Hulk but less green and more terrible 80s fashion. Given enough time and bullshit, he will eventually get set off by something. In this case, it just so happened to be asshole gods, catalyzed by a lot of liquor and some happy pills that are really just not strong enough to cut through his pissiness.

"You're damn fuckin' straight," he says, or more accurately, sort of snarls. There's a second where his teeth don't look quite right, too long and needle-sharp, because sometimes there's shit even glamours can't cover. "Who gave them the fuckin' right? They fuckin' eat off us like fuckin' parasites and won't even fuckin' tell us shit for shit when we ask. What gives them the fuckin' right?"