Monkey Punch
The Tokyo Pop releases of the original Lupin manga note in their preface that Jigen's appearance and temperament are based on the actor James Coburn, especially Coburn's role in "The Magnificent Seven". This has been confirmed by Monkey Punch during a 2003 Dallas, Texas anime convention interview. In a television documentary celebrating the manga's history, Monkey Punch stated he based the Jigen/Lupin relationship on Alain Delon and Charles Bronson's teaming in the 1968 film "Adieu l'ami".