The Japanese manga series One-Punch Man contains a number of fictional characters created by One and illustrated by Yusuke Murata. The series follows a superhero named Saitama and his disciple Genos who join the Hero Association so they can be recognized as such when they fight various monsters and villains. The Hero Association ranks all of its members by a Class and a ranking within that class. Characters listed are ones noted by the author in the manga profiles, ones that were highlighted in the anime character list, and ones that recur over several story arcs.
One-Punch Man Manga Main characters:
Saitama (サイタマ, Saitama) is the main protagonist of One-Punch Man and the most powerful being to exist in the series. Saitama faces a self-imposed existential crisis, as he is now too powerful to gain any thrill from battle.
Initially just a hero for fun, Saitama later registers to be a professional hero for the Hero Association and defends his home in Z-City from monsters, villains, and other threats. Under the Hero Association, he is assigned the hero name Caped Baldy (ハゲマント, Hagemanto; Viz: Bald Cape) and is currently ranked 7 in the B-Class.
Genos (ジェノス, Jenosu) is the deuteragonist of One-Punch Man. He is a 19-year-old cyborg and the disciple of Saitama. He is always aiming to become more powerful and fights for justice. Under the Hero Association, he is given the name Demon Cyborg (鬼サイボーグ, Oni Saibōgu) and is currently S-Class Rank 14.
Speed-o’-Sound Sonic (音速のソニック, Onsoku no Sonikku), more commonly called Sonic, is a recurring villain and occasional anti-hero. He first appeared as a bodyguard hired by Zeniru. He is a former member of the 44th Graduation Class of the Ninja Village, nicknamed “The End”. Sonic is one of the few people aware of Saitama’s true strength and is a self-declared eternal rival of Saitama
Mumen Rider (無免ライダー, Mumen Raidā) is the C-Class Rank 1 professional hero of the Hero Association. He is one of the few people aware of Saitama’s strength.
Fubuki (フブキ, Fubuki; Viz: Blizzard), also known by her hero alias Blizzard of Hell (地獄のフブキ, Jigoku no Fubuki; Viz: Hellish Blizzard) is the B-Class Rank 1 professional hero of the Hero Association. She is an esper, the younger sister of Tatsumaki, and the leader of the Blizzard Group, a B-Class hero faction.
She and her sister are known as the Psychic Sisters. Fubuki is one of the few people who are aware of Saitama’s true strength and is currently trying to recruit him into her group. She’s also a self-declared member of the Saitama Group.
Atomic Samurai has long black hair tied in a ponytail. He has dark eyes and a defined jawline. He sports a small goatee and is usually seen chewing on a blade of grass.
His attire consists of a hooded red cloak with an atom symbol on the back draped over his open black haori. Beneath the haori is a traditional loose-fitting white robe tied with a white sash and two haori himos. He wears his swords on his left side.
Flashy Flash is a young man with an androgynous appearance. He has sharp blue eyes and long ice-blonde hair with bangs brushed to the right side of his face. He wears a dark blue bodysuit with metallic bracers over his arms and upper chest armor with a long white cape over it.
He adorns himself with two eight-pointed stars on either side of his head and on his cape. He has a chain strapped around his waist that holds his sheath and sword in place.
Handsomely Masked Sweet Mask (イケメン仮面アマイマスク, Ikemen Kamen Amai Masuku; Viz Amai Mask aka, Handsome Kamen) is the A-Class Rank 1 professional hero of the Hero Association. Apart from his hero profession, he is a famous model, actor, and singer, and is the most popular star in the world. In addition to his job as a hero, he is a member of the hero rank evaluation staff.
Puri-Puri Prisoner (ぷりぷりプリズナー, Puripuri Purizunā) is the S-Class Rank 17 professional hero of the Hero Association. He is the boss of the prisoners held within Smelly Lid Prison.
Mosquito Girl (モスキート娘, Mosukito Musume) was a prototype artificial mutant created by Dr. Genus of the House of Evolution.
Watchdog Man (番犬マン Banken-man) is the S-Class Rank 12 professional hero of the Hero Association. He is in charge of Q-City.
Tanktop Master (タンクトップマスター, Tankutoppu Masutā; Viz: Tank-top Master) is the S-Class Rank 16 professional hero of the Hero Association. He is the leader of the Tank Topper Army.
Drive Knight has long black hair and wears a white mask. His mask has a single horizontal slit for the eyes, and a single red shining eye in the center of the slit. The mask has three small vertical slits where his mouth should be. His armor is rather simplistic, being similar to a medieval black knights’ armor. His appearance changes with his Tactical Transformations.
Bofoi has white hair and a large nose. He is also seen wearing a lab coat over his blue shirt. Bofoi acts mainly through the use of his robots controlled from a safe distance. Two of his robots have been displayed. The first is a large unit capable of flight with a high level of firepower attached. The second was much smaller, roughly human-sized and with no visible weaponry, and possibly used for reconnaissance.
Gyoro Gyoro appears as a large slug-like monster with a single eye (colored red in the manga and blue in the anime), with no visible facial orifice and eight arms protruding through his head. He has four main arms, stubby legs, three toe feet, and a fat circular body, which is green in the manga and pink in the anime.