One of these things is not like the others. One of these things is just way too strong.note Clockwise from the top: King, Flashy Flash, Tatsumaki, Fubuki, Zombieman, Puri-Puri Prisoner, Pig God, Atomic Samurai, Bang, Watchdog Man, Saitama, Genos, Mumen Rider, Metal Bat, Metal Knight, Superalloy Darkshine, Child Emperor, Speed-o'-Sound-Sonic, Drive Knight, Tank-Top Master. Not pictured: Garou, Blast, Amai Mask, Suiryu, multiple other Hero Assocation members and many, MANY Monster of the Week.
List of characters in One-Punch Man.- Hero AssociationClick to expand A-Class Heroes (Handsome Kamen Amai Mask, Iaian, Okama Itachi, Bushidrill, Blue Fire, Stinger, Butterfly DX, Lightning Genji, Lightning Max, Golden Ball, Forte, Spring Mustachio, Heavy Kong, Chain'N'Toad, "Snake Fist" Snek), B-Class Heroes ("Hellish Blizzard"/Fubuki, Eyelashes, Wild Monkey, Jet Nice Guy, Darkness Blade, Triple-Staff Lilly, Tank-Top Blackhole, Mushroom), C-Class Heroes (Mumen Rider, Tank-Top Tiger, Allback-Man), Organization Founders (Sitch, Mccoy, Muffintop)
- Saitama
- S-Class HeroesClick to expand (BLAST, "Terrible Tornado"/Tatsumaki, Bang/"Silverfang," Atomic Samurai, Child Emperor, Metal Knight, King, Zombieman, Drive Knight, Pig God, Superalloy Blackluster, Watchdog Man, Flashy Flash, "Demon Cyborg"/Genos, Tank-Top Master, Metal Bat, Puri-Puri Prisoner)
- Neo HeroesClick to expand Fuzzy, Blue, Accel, Suiryu, Ryumon, Webigaza, Zaedats, Infelsinave, A
- Villains and MonstersClick to expand House of Evolution (Doctor Genus, Mosquito Girl, Carnage Kabuto, Beast King, Armored Gorilla), Paradise Group (Hammerhead), The Organization, Dark Matter Thieves (Lord Boros, Melzalgald, Groribas, Geluganshp), "Speed-O'-Sound" Sonic, Monsters/Mysterious Beings (Crablante, Vaccine Man, Oldface & Beefcake, Kombu Infinity, Sea King), the Monster Association, God
- Garou
- Monster AssociationClick to expand Monster King Orochi, Lord Psykos, Black Sperm, Elder Centipede, Evil natural Water, Fuhrer Ugly, Gouketsu, Gums, Homeless Emperor, Overgrown Rover, Awakened Cockroach, Bug God, Do-S, Devil Long Hair, Eyesight, Face Ripper, Great Food Tub, Junior and Senior Centipede, One-hundred Eyed Octopus, Phoenix Man, Royal Ripper, Vampire, Destrochloridium, Marshall Gorilla, Rhino Wrestler, Gale Wind, Hellfire Flame
- OthersClick to expand Charanko, Doctor Kuseno, Bomb, Zenko, Bakuzan
