Saitama

サイタマ

Abilities: Immeasurable Strength, Immeasurable Speed and Reflexes, Infinite Stamina, Supernatural Senses, Invulnerability, Indomitable Will
Level:

Spoiler

Partner(s): Genos
Saitama is the most powerful hero alive. Having apparently trained himself to a superhuman condition, Saitama faces an existential crisis because he is now too powerful to derive any thrill from his heroic deeds.
He is registered with the Heroes Association as a C-Class Superhero and is tasked with defending Z-City against Mysterious Beings.
Saitama is usually deliberately drawn in a simpler style than other characters, featuring a very rounded head with only a simple mouth and eyes. When depicted in a more 'action-oriented' style with greater detail, Saitama is revealed to have sharp features, dangerous-looking eyes, and chiseled musculature. His costume consists of a plain yellow jumpsuit with a short zipper at the collar and a belt. The outfit is completed by an ensemble of red boots and gloves, along with a white cape.
For a superhero, Saitama is rather laid back. Because even the mightiest foes pose no challenge to him, he does not take his hero work very seriously. Despite this, he is constantly searching for an opponent that can challenge him, as his superhero work is beginning to bore him due to its ease. The combination of his attitude, unstoppable strength, and distinctively simple and 'unimpressive' appearance often causes his battles to become anticlimactic. Saitama will usually allow his opponents to rant about their motives and power up into their strongest forms before suddenly and nonchalantly obliterating them with one punch.