Fang Yuan from the Reverend Insanity manhua, he's pretty edgy %900 percent of the time, but he mostly checks the insane box.
(It's also called Master of Gu but that name is pretty lame.)
Dunno man the only thing I do is:
cursing = guy who curses a lot
little speech = guy who doesn't talk much
mockery = Exilis
(may or may not contribute to the unbelievably amazing quality of my writing.)