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One Shotter (ー発屋, Wanshottā) is the A-Class rank 22 professional hero of the Hero Association.


One Shotter wears a jacket that has "ONESHOT" written on his left arm. He wears a turtleneck sweater underneath. He has a bandoleer wrapped across his chest that carries ammunition for his gun. A mechanical eye patch covers his right eye.


One Shotter is a confident, level-headed fighter, only losing his cool when his weapon malfunctions. During the raid on the Monster Association, he expresses sympathy for the hostage, Waganma, for being a high-profile target as the son of a rich family.


Human Monster Saga[]

Monster Association Arc[]

One Shotter is one of the heroes recruited to the Monster Association raid's support team.[1] Later, he kills a monster who tries to shoot Twin Tail, and several other ones that try to ambush him. But he runs behind Puri-Puri Prisoner as his gun jammed, just to get attacked by another monster, but is saved by Green. He then attempts to kill Rhino Wrestler, but the monster blocks all the bullets with his horn.[2]

One Shotter and the other heroes of the support team fight off Monster Association forces as they escort Waganma to safety. Suddenly, Nyan appears in the distance. One Shotter fires at the monster, but Nyan redirects the bullet's trajectory with his claws and launches it back toward him, hitting his mechanical eye patch and incapacitating him.[3]

While Drive Knight battles Nyan, Sekingar carries the incapacitated heroes to safety, One Shotter among them. One Shotter is still breathing when Drive Knight finishes off the monster.[4]

Abilities and Powers[]

As an A-Class hero, One Shotter is a skilled and powerful fighter. He has a very keen eye for shooting and was able to kill a monster sniper with a single shot to the head. However, he appears to be rather helpless without his sniper rifle and against stronger opponents who can counter or dodge the bullets, as seen as he was terrified when a monster rushed him while his gun was jammed, and his performance against Rhino Wrestler.

One Shotter displays his proficiency with shooting.

Physical Abilities[]

Enhanced Reflexes: One Shotter possesses quick reflexes, being able to dodge a monster's attack from behind by jumping and quickly retaliate against it with a single shot to the head.

Enhanced Strength: One Shotter is unaffected by his weapon's recoil.

Fighting Style[]

Expert Marksman: One Shotter is a very advanced and experienced marksman, being able to kill a monster sniper on the roof with a single shot by shooting his eye. He is not only adept in long-range shooting, but he is also able to eliminate several monsters with both head-shots and heart-shots. He is a very impressive shooter at close and long-range.


One Shotter's Barrett M95

Barrett M95: A large-caliber sniper rifle that stretches across more than half of One Shotter's body. The sniper rifle is extremely effective and potent and has bullets that can easily rip through other bullets. However, the gun is prone to jam in the most crucial moment, causing him to be powerless and forcing him to take cover from monsters to save himself and clear the jam.

Mechanical Eye Patch: This eye patch is presumably used to help him aim with his gun. It is highly probable the mechanical eye patch significantly increases his firing accuracy to superhuman feats, as he was somehow able to shoot a monster coming behind him in the center of its head without even looking and actually shoot through a bullet of a monster sniper (his rifle also lacks a proper scope or sight, further evidencing this fact.)

Bandoleer: His bandoleer carries ammunition.

Major Battles[]

Participants Chapter(s) Episode(s) Result
One Shotter vs. Various monsters 96 None Win
One Shotter and Heroes vs. Rhino Wrestler 96 None Win
One Shotter and Heroes vs. Nyan 116 None Loss


  • One Shotter's hero name is based on the sniper principle "One Shot, One Kill".


  1. One-Punch Man Manga; Chapter 95, page 35
  2. One-Punch Man Manga; Chapter 96
  3. One-Punch Man Manga; Chapter 116 (Online), page 10
  4. One-Punch Man Manga; Chapter 119 (Online)


Hero Association
S-Class 1. Blast • 2. Tornado of Terror/Tatsumaki • 3. Silver Fang/Bang • 4. Atomic Samurai/Kamikaze • 5. Child Emperor • 6. Metal Knight/Bofoi • 7. King • 8. Zombieman • 9. Drive Knight • 10. Pig God • 11. Superalloy Darkshine • 12. Watchdog Man • 13. Flashy Flash • 14. Demon Cyborg/Genos • 15. Metal Bat/Bad • 16. Tanktop Master (Tank Topper Army) • 17. Puri-Puri Prisoner
B-Class 1. Blizzard of Hell/Fubuki (The Blizzard Group) • 2. Eyelashes • 3. Mountain Ape • 6. Wild Horn • 7. Caped Baldy/Saitama • 20. Glasses • 25. Pink Hornet • 29. Double Hole • 39. Smell Master • 39. Reclusamurai • 43. Gun Gun • 49. Butcher • 50. Jet Nice Guy • 60. Needle Star • 65. Piko • 69. Crying Man • 70. Trap Tengu • 71. Captain Mizuki/Mizuki • 74. Lily of the Three Section Staff/Lily • 77. Bone • 81. Tanktop Black Hole • 93. Mushroom • 99. ShooterDarkness BladePineapple
Undetermined Class Tanktop GirlTanktop RockabillyTanktop RacerTanktop Al DenteTanktop SwimmerTanktop JungleTanktop MaskTanktop HatterTanktop DoctorPandaman
Staff Members AgoniBearded WorkerBespectacled WorkerC Branch OperatorConsole OperatorExecutive GirlGuichesMain Branch OperatorMcCoyNarinkiSekingarShelter Nr. 7 GirlSitchSome Important GuySpecial Committee GirlZ Branch Committee GirlZ Branch OperatorZeimeet