One Shotter

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

Appearance
One Shotter wears a jacket that has OneShot written across the arm and 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.

Personality
One Shotter appears to be a mostly level-headed, pretty average guy. He often has a vacant or tired expression on his face. When going to assault the Monster Association, he worries about the hostage and sympathizes with him for being a high profile target as the son of a rich family. In the heat of battle he maintains a cold and confident face for the most part. He is very observant on the battlefield and immediately noticed the monster sniper on the other roof and was able to react to the monster sneaking up behind him. However, when things go south for him he loses his cool and without his sniper, he acts very scared, as seen when he panicked at a monster running toward him. He appears to have bad luck with his gun jamming, which causes him the most stress.

Monster Association Arc
One Shotter is one of the heroes recruited to the Monster Association raid's support team. 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 gets saved by Green. He then attempts to kill Rhino Wrestler, but the monster blocks all the bullets with his horn.

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.

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, as he was terrified when a monster rushed him while his gun was jammed. Also his over-reliance on his weapon leaves him helpless against stronger opponents who can withstand or dodge/deflect the bullets, as seen with Nyan and Rhino Wrestler.

Physical Abilities
Enhanced Reflexes: Being an A-class hero, he has rather impressive reflexes. One Shotter was able to react to a monster attacking from behind and kill it in a single shot to the head.

Enhanced Strength: One Shotter is able to quickly fire and dodge around monsters without taking any negative effects from the recoil of his weapon.

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.

Equipment
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.

Bandoleer: His bandoleer carries ammunition.

Trivia

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