Which superhero loves peace much enough to kill for it?

'The Peacemaker' is the name of a series of superheroes originally owned by Charlton Comics and later acquired by DC Comics. The original Peacemaker first appeared in Fightin' 5 #40 (Nov. 1966), and was created by writer Joe Gill and artist Pat Boyette.

The Peacemaker is Christopher Smith, a pacifist diplomat so committed to peace that he was willing to use force as a superhero to advance the cause. He uses an array of special non-lethal weapons, and also founds the Pax Institute. Most of the villains he goes up against are dictators and warlords.

Smith later learns that his peace-through-violence efforts were the result of a serious mental illness brought on by the shame of having a Nazi death camp commandant for a father. He believes his father's spirit haunts him continually and criticizes his every move, even as he tries to live down his past.