It’s an offhand mention, but the fact remains: Alcatraz is cold. Really, really cold. Even sitting in the sun in the dark suit, he still feels cold like a corpse.

It’s a combination of no bloodflow to really speak of (the suit has it’s own plumbing system) and all that chrome; it’s alien metal, but it conducts heat all the same and feels icy to the touch. Carbon itself also has a high heat conduction.

As for the other end of the spectrum, the game can suck one. Fire can’t appreciably set a nearly all-carbon object ablaze. There’s nothing inside to cook, anyway, aside from the nervous system, but wrapped in all that suit, I’m quite sure it’s fine. He can stand in considerable heat and feel little to nothing.

(atomic carbon has a boiling point of over 4 thousand kelvin, so, that’s my reasoning on the matter.)