Know what's cooler than having supernatural abilities? Nothing. That's what. But if you did have superhuman strength, abilities and ridiculously long arms, you'd need something to cover up the idiotic grin on your face. That's the good thing about Alex's hood. He can grin all he likes and no-one knows.
Reason for hood: Alright, the truth is, it's actually part of his anatomy. No, really, as with the rest of his outfit, it's called 'biomass'. So not actually clothes at all. A bit like Bayonetta in that respect
Does hood come down? Fleetingly
If hood were removed? Mr Tickle