Base B (ベースB, Bēsu B)[1] is a prisoner of the Smelly Lid Prison.


Base B is a muscular built man with vertical stitches over his eyes and chest. He wears his hair in a long mohawk and has dark lines around his eyes, dark lips and pierced ears. He wears striped pants and his shirt tied around his waist.


Human Monster SagaEdit

Monster Raid ArcEdit

A cat-like monster, called Nyan broke into Smelly Lid Prison searching for Puri-puri Prisoner. Base B and the other prisoners question the monsters motives.[2]

Appearances in Other MediaEdit



Base B tried to intimidate Sonic by bumping into him rather hard only to notice Sonic dislocated his shoulder.[3]


  • "Yaaaow!! He dislocated my shoulder!


  1. 1.0 1.1 1.2 One-Punch Man Encyclopedia; One-Punch Man: Hero Perfection, page 184
  2. One-Punch Man Manga; Chapter 66, page 15
  3. One-Punch Man Omake; Prison