Blast

Blast does not disclose his personal information in the Hero Association Catalog. However, like Saitama, he considers his hero work a hobby. He also seems to have independent tendencies, keeping his location and status unknown and advising Tatsumaki to use her powers to defend herself rather than expecting others to save her. In the present, Blast exhibits a casual, easygoing demeanor. He does not seem to be very bothered by Saitama, Flashy Flash, and Manako touching a mysterious cube, simply explaining its nature to them. Blast was also not angered by the fact that Flash tried to attack him, simply telling him to calm down, and he was willing to teleport them out of the area they were in. He does not question Saitama's presence alongside an S-Class hero, and he answers Saitama's queries about his own arrival. However, he becomes momentarily serious upon recognizing Manako's monstrous nature. But after Saitama provides an explanation, Blast quickly reverts to his relaxed attitude, accepting the answer without further interrogation. Blast seems to not be completely out of touch with other heroes, as he recognized Bang, addressing the elder martial artist by his hero alias, as well as recognizing Flash and knowing his exact ranking upon meeting him. He also requested Flash and Saitama to send Sitch and Tatsumaki his regards. Blast demonstrates a strong concern for Earth's safety, evident in his attempts to minimize collateral damage during his encounter with Garou, and his grave apprehension during the clash between Saitama and Garou in the Ominous Future. He disapproves of unnecessary killing, intervening in the fight involving Sonic, Flash, and the Heavenly Ninja Party before casualties could occur. In the original webcomic, Blast's attack on the Ninja Village shows he does not spare humans he deems evil, presumably killing the young assassin trainees in the village based on what Sonic told Flash, similar to Sweet Mask's mindset. This contrasts with the manga, where he disapproves of what he considers unnecessary bloodshed, as seen during his intervention in the fight between Sonic, Flash, and the Heavenly Ninja Party, where he stops the conflict without causing any fatalities.

Blast is a tall, muscular middle-aged man with spiky black hair, a slight beard, and seemingly yellowish-green eyes. He wears bulky armor with large shoulder pads, a large cape worn out at the bottom, and emblems of his name on his chest and the backs of his shoes. His gloves have circles on the back of his fists, which form an infinity symbol when he presses them together to teleport. His suit shows signs of damage, presumably from his many battles. He also wears shades and has a scar running across his face between his eyes. He did not have this scar until it was inflicted during "God's" intervention in his battle against Elder Centipede. The outline of his iris is a wavy black pattern, as opposed to just a consistent shape seen in other characters. Eighteen years ago, when Blast first met Tatsumaki, his appearance was largely similar to today, but he looked younger and did not have a beard. Additionally, at that time, neither his armor nor his body showed any signs of damage or injury, and he did not wear shades. In the webcomic, he sports the same spiky hair as seen in his manga appearances and appears to have a simple fabric suit with a front zipper outlined with a fiery contour. His outfit looks similar to Saitama's Hero Suit. His eyes appear the same as his purported son Blue's: they have multicolored irises, the light near the center but dark towards the outside. His hero costume also appears to be similar to Blue's battle suit, with the gauntlets of both suits having circles on the back of the hand. Blast colored in Volume 28 Back Cover.png|Blast's appearance 18 years ago. Blast full body.png|Blast's current appearance.