Daisuke Jigen (次元大介, Jigen Daisuke) is a smooth gunman who is most seen accompanying Lupin in his endeavors and heists. Despite Jigen disliking Lupin's lust for women, to the end he remains Lupin's loyal and reliable partner.
Jigen is a master thief and the Lupin Gang's key marksman. He can perform a 0.3-second quick-draw and has an accuracy that borders on superhuman; he can shoot skeet with a handgun, explode a missile before it hits by targeting the warhead, and can deflect another bullet by shooting it in mid-flight. He prefers to conceal his eyes using his hat, as it gives him a more enigmatic appearance; when one or both of his eyes are seen, it is occasionally used to demonstrate surprise.