When humanity truly needs saving, he will definitely come.[1]
— Sitch

Blast (ブラスト, Burasuto) is a S-Class Rank 1 professional hero for the Hero Association. His whereabouts are currently unknown. 


Blast has a spiky black hair and wears a superhero suit with a cape similar to Saitama's. Unlike Saitama's suit, however, there is a fiery contour around the zipper.


Nothing is known of Blast's personality, but as evidenced by Child Emperor's reactions, Blast has a tendency of not showing up to the Hero Association meetings.[2] Like Saitama, he considers his job as a hero more like a hobby. From Tatsumaki's words, it appears that he hasn't appeared for a while, as she asked herself when Blast will come back.


Webcomic notice The following section contains Webcomic spoilers. You have been warned, manga-only readers.

At some point 18 years ago, Blast saved Tatsumaki from a monster. He then encouraged Tatsumaki to use her powers when in danger again.

Two years ago, Blast fought Elder Centipede and severely wounded the monster. However, the monster managed to escape underground.[3]


Hero Association Saga

Alien Conquerors Arc

During the S-Class meeting Child Emperor mention Blast's absence[4] and was later confirmed by Sitch who mention his unknown whereabouts.[5]

Human Monster Saga

Monster Association Arc

Webcomic notice The following section contains Webcomic spoilers. You have been warned, manga-only readers.

During the battle between the Monster Association, Hero Association, and Garou, Psykos manages to successfully take town Tatsumaki. Psykos mentions that it was naive for the heroes to be dependent solely on Tatsumaki to take down the Monster Association and to not bring along Blast and Metal Knight to their hero team in which she calls them their bishop and rook. Even so, she thinks that this would've not helped much.

Abilities and Powers

Being the highest ranked hero of the Hero Association, it can be presumed that Blast is a very powerful S-Class hero. 

Fubuki mentions that Blast is "the one at the top of all heroes" during her talk with Saitama in his apartment, putting Blast alongside King in terms of power.[6] However, as King is revealed to be only an ordinary human, Blast's strength is unknown.

Blast was also able to bring Elder Centipede, a Dragon-level threat, to the brink of death.[7]

Sitch also mentions Blast would be required to stop a God level threat.


  • "You sloppily formed your team, without Blast and Metal Knight. You naively thought Tornado alone could win this war? You started this game without the bishop and rook. Though, I don't think having the bishop and rook would've helped you much." - Psykos
  • "Because...Bla-...On second thought, No."- Tatsumaki
  • (To Tatsumaki after saving her) "When the time comes, don't go expecting someone to come save you."
  • (To Tatsumaki about being a hero) "...I guess this is more of a hobby."


Webcomic notice The following section contains Webcomic spoilers. You have been warned, manga-only readers.

  • Blast was the reason Tatsumaki became a hero, emulating Saitama who could convince people to be like heroes.
  • Blast is the first known human to become a hero in the series, as he was already fighting Mysterious Beings 15 years before the creation of the Hero Association.


  1. One-Punch Man Manga; Chapter 85, page 5
  2. One-Punch Man Manga; Chapter 29, page 20
  3. One-Punch Man Manga; Chapter 84, page 116-117
  4. One-Punch Man Manga; Chapter 29, page 11
  5. One-Punch Man Manga; Chapter 30, page 2
  6. One-Punch Man Manga; Chapter 44, page 13
  7. One-Punch Man Manga; Chapter 84, page 62


Start a Discussion Discussions about Blast

  • Theories about Blast True Identity

    121 messages
    • blast is probably just a regular hero who had the luck to look so similar to saitama that he climbed up on rankings by saitama's hero w...
    • Blast, in my opinion, is a completely different character with no relation to Saitama besides their similar suits, their opinions regarding th...
  • saitama and blast relation

    34 messages
    • BLAST might be the actual leader of the Monster Asso : Orochi! Gyoro Gyoro for many years made him implicitly, from the shadows, fight m...
    • That seems HIGHLY unlikable. ONE and Murata don't seem to think like even the average exceptional mangakas. It is obvious that Bl...