Atomic Samurai

アトミック侍

Abilities: Swordsmanship
Level: S-Class; Rank: 4
Debut: Chapter 29
Atomic Samurai has long black hair tied back in a topknot. He features sunken cheeks, a defined jawline, and a small goatee. His outfit includes a hooded cloak with an atom symbol on the back, draped over his open coat. Underneath the coat, he wears a standard samurai gi and waraji sandals. He carries a pair of katanas on his left hip, and judging by their length, he likely wields either a daito, an oodachi, or both. While the tsuka is typical for a katana, the guard features a unique atomic design.
Atomic Samurai displays a rather prideful personality, evident when he refused to shake Saitama's hand, stating that he only acknowledges the strong and that he would greet him if he reached the higher ranks of S-Class. He also seems to dislike being called old.