“Machine body, human heart — a cyborg who never stops taking notes trying to understand his teacher's true strength.”
High-temperature energy beams fired from both arms. His primary weapon — most enemies are incinerated on the spot.
High-speed movement and aerial maneuvering via propulsion thrusters. Used to control positioning and evade in combat.
Converts his entire body into a weapon system at maximum output. Still gets destroyed regularly — which is why the upgrades never stop.
A human who became a machine for the sake of revenge. Since the day he lost his family and hometown, getting stronger has been the only direction in his life. He is intensely serious and logical, his devotion to Saitama bordering on religious. He searches for deep meaning in his teacher's most mundane remarks, and refuses to stop no matter how thoroughly his body is destroyed. Revenge keeps him going — but the ordinary life he shares with Saitama is quietly returning him to something human.