Blast

When humanity is in peril and must be saved, he will surely take action.

Blast (ブラスト, Burasuto) is the S-Class Rank 1 professional hero of the Hero Association. His current whereabouts are unknown, and only a few select Hero Association staff members have the means to communicate with him.

Appearance
Blast is a man with a muscular build. He has spiky black hair and wears a superhero suit with a cape. In the webcomic, his suit's front zipper is outlined with a fiery contour.

Personality
Nothing is known of Blast's personality, as he has made no appearances in the manga. He does not disclose his personal information in the Hero Association Catalog. Akin to Saitama, Blast considers his hero work a hobby. He also seems to have independent tendencies, advising Tatsumaki to use her own powers to defend herself rather than expecting others to save her and only showing up on his own terms (in his case, according to Sitch, when humanity is in peril).

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

15 years ago, Blast defeated the Ninja Village Leader and put him into a coma. Two years ago, Blast fought Elder Centipede and brought him to the brink of death. However, the monster managed to escape underground before he could finish it off.

Alien Conquerors Arc
During the S-Class meeting, Child Emperor mentioned Blast's absence which was later confirmed by Sitch who mentions his unknown whereabouts.

Monster Association Arc
Blast is mentioned in a Hero Association meeting. A staff member was frustrated at Blast's lack of activity despite being S-Class Rank 1. Sitch says that Blast cannot be ordered around but has enough faith in him that should humanity be in need of saving, he will appear.

During the battle between the Monster Association, Hero Association, and Garou, Psykos manages to successfully take down Tatsumaki and mentions that it was naive for the heroes to be dependent solely on Tatsumaki to take down the Monster Association. Psykos says that they should have brought along Blast and Metal Knight to their hero team in which she refers them as bishop and rook respectively. Even so, she thinks that they would have not helped.

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. Sitch also mentions Blast would only present himself if humanity is in peril.

Blast was able to bring Elder Centipede—a Dragon Level threat strong enough to combat the likes of Bang, Bomb and Genos simultaneously—to the brink of death, although he was smaller and as such presumably weaker when he first fought Blast. Despite this, Psykos believed that Blast could still defeat Elder Centipede even in his current state.

Fubuki speculates in the databook that Blast is stronger than King, can shoot lasers from his eyes and rules over psychic powers and the ability to command trillions of robots. She hypothesizes that he could beat the rest of the S-Class all at once. Blast also defeated the leader of the ninja village, who is regarded as the most powerful ninja to ever exist, and put him in a coma for 15 years.

Quotes

 * (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."

Trivia

 * Blast_Original.png's debut in the manga was originally less ambiguous, clearly showing a long head of hair and a cape. However, in the tankōbon release of the manga his appearance was changed to be even more mysterious and equivocal.
 * The rumor that he can shoot lasers from his eyes and command an army of robots is most likely a reference to Superman.
 * Blast was the reason Tatsumaki became a hero.
 * Blast is the first known human to perform heroic acts in the series.

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