Swordsman

"Unlike your heroes, I'm not fond of showing mercy."

Possibly the illegitimate son of the original Swordsman (he did sleep with a lot of ladies during his darker days), Zaw Duquesne has no real love of his supposed father, but follows in his footsteps as an expert in bladed combat, if a somewhat brutal successor.  The Myanmar native was recruited by Mono "Drone" Matsumi's father to protect her and bring her to the States, where she would find help in mastering her dark powers; Zaw's focused mind prevents him from going mad from seeing Mono's true face.  Suffice to say, a man who kills easily and is a total professional will not sit well with American superheroes.

The obligatory legacy character, with a dash of Vergil from Devil may Cry and Byakuya from Bleach.