I likes!
One thing: Does he introduce himself as Rafi, or does everyone just call him that? Or is there someone in particular that uses that (some sort of more forcefully social sidekick type? I only ask because Rafi doesn't strike me as the sort of diminutive a reckless antisocial fighter type would adopt on his own. On the other hand, I could see him calling himself Murdock, or maybe Raf, but having someone around that calls him Rafi instead (I get a little sister image for some reason).
To be fair I may just be skewed by a childhood of "Raf" the antisocial Ninja Turtle 
yeah, his friends call him Rafi, his ''acquaintances'' call him Murdock. he's a ghetto kid, about 23 yrs old. he's a protector, you could say. he's known for it through the neighborhood.
