Name: Golgo 13
Alter Ego: Duke Togo
First Appearance: Big Comic (Jan. 1969): "Bigguseifu Strategy, Episode 1"
Creators: Takao Saito
Number of Appearances: 65
Comic Book Appearances: 13
TV, Film Appearances: 52
Golgo 13 has been called a Japanese counterpart to James Bond, except with a darker character, a much more hardcore and a complete lack of morality. Despite Golgo's "amoral" status, Golgo seems to take assignments that work with his own logic in ethics as the stories are always set up so that Golgo is at least nominally a "good guy."
Suggested links for further research about this character and the character's religious affiliation: