Direct characterization on Max

From the text:

"Grim has it fixed in his head I’m at a dangerous age and they need to keep me under observation. Like I might make bombs or start a fire. Or whack out the local pets with my trusty slingshot or whatever – except I never had a slingshot.."

Not that I have any ideas. My brain is vacant, okay? I’m just this critter hiding out in the basement, drooling in my comic books or whatever. All right, I never actually drool, but you get the picture.