Genma Shiranui (不知火ゲンマ, Shiranui Genma) is a Tokubetsu Jōnin from Konohagakure, who specializes in assassination. He is recognized by his trademark senbon he always has in his mouth, and uses senbon in many of his techniques.
Genma has dark brown hair reaching to his neck, and black eyes. He wears his forehead protector backwards, and wears a standard jonin outfit. He always has his trademark senbon in his mouth.
- Genma said during the Chūnin Exams that Naruto had a "mean left hook". But at that time, Naruto was doing an uppercut, not a left hook though it was the left hand which was in use.
- According to the Naruto Official Databook:
- Genma's registration number is 010203.
- Food he likes best is pumpkin broth and he hates spinach.
- Genma's hobby is traveling.
- His favorite phrase is: "Actions speak louder than words".