Plus sum updated info! ;3
The lines on his teeth (and ribs) change colors depending on his mood, orange for more excited or happy moods, blue for calmer moods
He's an adventurous spirit and likes pulling pranks on people.
He's smart, and quite the gossiper. He loves drama and secrets, and knows quite a few too.
He's a bit morally grey but not in a murdery way, more in a He does his own thing and doesn't like being told what to do, kinda way. Like "is it really black mail if I get something out of it?" Though he can be nice when he wants to be
Speaking of blackmail, he overhears a lot of juicy gossip when traveling the multiverse and has dirt on a LOT of people. And he takes FULL advantage of it, making the blackmailees do him favors
He has intense mood swings that vary day to day. One day he could flip from happy to grumpy from a minor inconvenience, other days he has the patience of a saint
He has pedophobia, the irrational fear of babies and small children
He doesn't like either nightmare or dream, thinking both are kind of pretentious, but he is on neutral ground with their respected teams. Except blue, he feels uncomfortable around him. (Or any pure swap verse really)
He has a terrible fashion sense
The dude is super touchy like an annoying little brother, mostly to annoy people