He doesn't fly off at every little slight but he does get angry and tends to be on edge often. He's just good at handling it. He is at a constant rage diff 5 though he works hard to keep himself from flying off the handle at every little slight. He isn't a Twitcher after all.
Tattoo
The design that runs up along over his hand and forearm is certainly an interesting piece seeming to have elements of South American design seeming to clash with his heritage a bit.
Klepto
Ya... you got something small and shiny? Valuable? Not locked up? There is a chance it could 'find' it's way into his pockets or find him playing with his latest acquisition that is stamped with a name not his own.
Apache
He spent most of his life being taught how to fight and is well schooled in Apache Knife fighting. He himself has strong links to the tribe though he doesn't seem to focus on those ties himself.