For his entire life, past and future, he'll act, feel, and think like he's older than he is--a fact much belied by his fun-loving nature, but true all the same. That probably has something to do with why his mutant powers manifested at fourteen (his current age), earlier than most, but it's late and I'm tired and also narrating this with no authorial distance. Deal with it, I suppose.

He rolls his eyes now, though. Not very mature at all. "It's dere problem, not ours."