He is a pacifistdiplomat who is so committed to peace that he is willing to use force as a superhero to advance the cause.
When the character was acquired by DC Comics, this contradictory motivation was explained as a serious mental illness brought on by the shame of having a Nazideath camp commandant for a father. He believes that his father's spirit haunts him continually and criticizes his every move even as he tries to live down his past.