" ... where pretty much no one actually acts like a real world mafioso, SO I WORKED WITH WHAT I COULD."

Xanxus shooting Kikyo in the head isn't mafia-like? :I
He also does look quite Italian unlike some other characters.

"And I've known some old men who still had plenty of hair well into their seventies and even their eighties, so it's possible. Especially when you're as manly as Coyote Fucking Nougat."

Super old guys with thick hair? *lol* I've yet to see them.