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Mentai (メンタイ, Mentai) is a Martial Artist and user of the Spice Fist.


Mentai is a young man with Paarl hair and eyes. He has a small X-shaped scar on his right cheek and a band-aid over his nose. He wears a Cocoa Brown short sleeved shirt that has a chilli on it, gray pants, maroon fur on his collar and wrist, and Chestnut Rose gloves.


Human Monster Saga[]

Monster Raid Arc[]

Mentai is participating in the Super Fight Tournament in C-City at the C-City Super Stadium. This is the sixth time Mentai has participated in the tournament.[1] While watching the match between Max and Suiryu, he was shocked by how easily the latter defeated his opponent.[2] He was beaten to near death by Choze in his round in the tournament.[3]

Super Fight Arc[]

Mentai watching the match between Saitama and Suiryu

Mentai is later seen watching the final match between Charanko (who is Saitama in disguise) and Suiryu with Lin Lin, Sour Face and Zakos, while recovering from his injuries.[4] After Suiryu continues to battle Saitama after he got disqualified for wearing a wig[5], Mentai comments Suiryu's raw strength.[6]

Mentai is later present at the closing ceremony when it is suddenly interrupted by The Three Crows and Gouketsu, who tells them they will become monsters.[7] Mentai and the other martial artist are given a choice to become a monster or die; visibly frightened he is shocked to see some of the fighters accepting the offer.[8] He later watches Suiryu fight the transformed martial artists and is saved from Choze's energy ball attack.[9] When Suiryu considers becoming a monster, Mentai frighteningly watches, but is relieved that it was never his intention and cheers for Suiryu.[10] Mentai is then knocked out by the crows with the rest of the martial artists.[11]

Abilities and Powers[]

Not much is known about Mentai's strength. Ostensibly, he is rather weak as he was easily defeated by Choze.

Fighting Style[]

Martial Artist: Mentai is presumably a skilled martial artist as he participated in the Super Fight tournament.

  • Spice Fist (香辛拳, Kōshin Ken): Has not been shown yet. He uses powerful spices on his fists to blind his foes.[12]

Major Battles[]

Participants Chapter(s) Episode(s) Result
Mentai vs. Choze (Off screen) 63 18 Loss


  • His name is from "Mentaiko" (明太子), seasoned cod roe. His spice ability is possibly referring to "Karashi Mentaiko" (辛子明太子), Spiced pollack roe.


  1. One-Punch Man Manga; Chapter 60, page 7
  2. One-Punch Man Manga; Chapter 62, page 15
  3. One-Punch Man Manga; Chapter 63, page 6
  4. One-Punch Man Manga; Chapter 70, page 20
  5. One-Punch Man Manga; Chapter 71, page 6
  6. One-Punch Man Manga; Chapter 71, page 23
  7. One-Punch Man Manga; Chapter 71, page 33-42
  8. One-Punch Man Manga; Chapter 72, page 13-24
  9. One-Punch Man Manga; Chapter 72, page 26-40
  10. One-Punch Man Manga; Chapter 72, page 53-57
  11. One-Punch Man Manga; Chapter 73, page 8
  12. One-Punch Man Manga; Chapter 60, page 7


Martial Artists
Heroes BangMaxSneck
Unaffiliated BazuzuBombCharankoDaveGatlinJakumenLin LinMentaiSour FaceSuicho SuikoSuiryuZakos