Havoc. One man wrecking crew. Ultimate badass. Yeah, not cliche at all.
Actually, is kind of a morally vacant mercenary without much direction, sells his service purely to the highest bidder. Has at times not mentioned a competitors bid until it was convenient to do so, like after his current client has paid him and is suitably vulnerable for elimination. Only things he won't do is kill children. Not necessarily because he feels that it's wrong, but because kids tend to be a problematic target.