Nyan (ニャーン, Nyān)[1] is a Mysterious Being and a member of the Monster Association.


Nyan has the appearance of an anthropomorphic cat-like monster, with light colored fur and a choker with a bell attached to it.


Human Monster SagaEdit

Monster Raid ArcEdit

Nyan broke into Smelly Lid Prison to find Puri-Puri-Prisoner, but he wasn't there. Nyan instead decided to do business with the prisoners.[2]

Super Fight Arc Edit

Nyan later transformed many prisoners into monsters and they all broke out of prison.[1]


  1. 1.0 1.1 One-Punch Man Manga; Chapter 74, page 6
  2. One-Punch Man Manga; Chapter 66, page 15