Golgo 13

Golgo 13, also know as Duke Togo, is the titular character of the manga series of the same name, created by Takao Saito. An assassin for hire, Golgo accepts jobs from various organizations & individuals. He is known for - among other things - his cold, calculating attitude, superb marksmanship skills & prowess with women.

Backstory
Nothing is known about Golgo 13's history. Although various stories have provided details about his past, it always contradicts each other or cast doubt upon themselves. Many people have speculated that he might be Japanese or otherwise Asian, given his pseudonym "Duke Togo".

Personality
Golgo 13 is cold & ruthless. Whenever he takes a job, he won't stop until it is complete. He is mostly quiet, talking only when he needs to. Despite his cold attitude, Golgo 13 has also admitted that he is cowardly as a rabbit, which is part of the reason that he manages to stay alive for so long. He also hates it when people walk up or stand behind him, and will punch anyone who does so.