I'd need to check available archetypes but some sort of Monk might work for a guy who got bored beating the crap out of people in his home city and decided to go journey the world and pick fights with everyone else there, like some sort of itinerant Australian.
"Oh yeah, bitches, got your peasant asses beat raw by this stunning exemplar of true-bred nobility. Not a single drop of blood on these bare knuckles that isn't yours." Plenty of room for character development there, too, for obvious reasons.
Drunken Master would also fit especially well, since Australians love to blow off the steam that comes from living on a island filled with murderous abominations by getting pissed up at the pub then glassing a cunt in the face.
Bonus points if "Australian" is just the dialect of the nobility where he comes from and he plays the whole thing entirely straight, like its too good for everyone else to learn or even understand.
Enemy draws a greatsword.
"Oi, what kinda cunt are ya, bringing a buttah knoife like dat to an 'onest affaih?"
Shit, Barbarian would also fucking work hilariously with that idea.