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Kombu Infinity (昆布インフィニティ, Konbu Infiniti) is a Tiger-level Mysterious Being that appeared in Z-City. It heard a rumor that a strong being was present in the Z-City Ghost Town. However, when the real creature couldn't be found, it decided to pose as the strong creature before being chased off by Saitama.


Kombu Infinity's full appearance was never revealed. It resembles the silhouette of a young person, with visible big, round eyes, and a mouth with some teeth missing. It has all the necessary limbs and kombu, seaweed tentacles as hair. When Kombu Infinity walked its feet squelched. Although it has an androgynous appearance, it speaks with a female's voice. 


Kombu Infinity has a sinister and scary personality. It heard the rumor of the strong being, coming there to fight it for enjoyment.[2] It likes to fight them, being almost fascinated by their abilities and enjoys their defeat.[3] It also seems that the creature spoke in the plural form, referring to itself as "we".[4]


Hero Association SagaEdit

Rumored Monster ArcEdit

Kombu Infinity shows up in Z-City after hearing the rumors of strong creatures living in the city. As it is walking around, the two A-Class heroes Golden Ball and Spring Mustachio show up. Golden Ball attacks immediately, but Kombu Infinity swats his attack to the side with one of its tentacles. At the same time, Kombu Infinity sneaks one of its tentacles through a storm drain and out behind Golden Ball. Kombu Infinity then grabs Golden Ball by the ankle and drags him down the road and then throws him into the side of a building, rendering him unable to fight.[5]


Kombu Infinity takes out Golden Ball

As Golden Ball falls to the ground Kombu Infinity takes the chance to attack Spring Mustachio, swatting at him with two of its tentacles. Spring Mustachio dodges and jumps away and takes out his weapon. Kombu Infinity sends out several tentacles to attack, but Spring Mustachio blocks them all. He then takes a stance and launches an attack at Kombu Infinity who dodges to the side. Spring Mustachio then calls for backup and asks Kombu Infinity why it is there in the city. Kombu Infinity mentions that it came from somewhere else and that since it found no strong creatures, itself would become the rumored monster.[6]

Kombu done for

Kombu stripped bare

Some time later Kombu Infinity wins against Spring Mustachio and is about to head further into the city when it notices someone walking towards it. Saitama appears, wearing a track suit and carrying a grocery bag, and stops in front of Kombu Infinity and mentions that he forgot to buy Kombu soup stock. Later, several heroes show up to the scene and find a massive hole through a building and a piece of kombu on the ground. Saitama is then shown boiling the kombu he ripped from Kombu Infinity's head.[7]

Abilities and PowersEdit

Kombu Infinity is a formidable being, seeing how it was able to defeat two low-ranked A-Class heroes with minimal effort despite only being a Tiger-level threat.

Physical AbilitiesEdit

Kombu Tentacles: Kombu Infinity has hair growing out of its head in the form of kombu, which it uses both offensively and defensively. According to Spring Mustachio, these tentacles are about as strong and resilient as steel.[8] Kombu Infinity has used its tentacles to defend itself, whipping its opponents or grabbing and throwing them.

Enhanced Strength: Kombu Infinity is strong enough to smack away objects that have the force to pierce steel.[1]

Enhanced Speed: Kombu Infinity appears to be quite fast, as it was able to dodge Spring Mustachio's Tomboy.

Fighting StyleEdit

Myriad of Tentacles (無数の触手, Musū no Shokushu): Kombu Infinity relies heavily on its tentacles to fight. Kombu Infinity utilizes them to both defend and attack.[1]

Major BattlesEdit

Participants Chapter(s) Episode(s) Result
Kombu Infinity vs. Spring Mustachio and Golden Ball 20 6 Win
Kombu Infinity vs. Saitama (Off screen) 20 6 Loss


  • Kombu Infinity is the first Mysterious Being that did not get killed during an encounter with Saitama.
  • The battle between Kombu Infinity and Saitama lasted a total of 1 second(s).[9]


  1. 1.0 1.1 1.2 1.3 One-Punch Man Encyclopedia; One-Punch Man: Hero Perfection, page 134-135
  2. One-Punch Man Manga; Chapter 20, page 28
  3. One-Punch Man Manga; Chapter 20, page 32
  4. One-Punch Man Manga; Chapter 20, page 15
  5. One-Punch Man Manga; Chapter 20, page 22
  6. One-Punch Man Manga; Chapter 20, page 30
  7. One-Punch Man Manga; Chapter 20, page 41
  8. One-Punch Man Manga; Chapter 20, page 25
  9. One-Punch Man Encyclopedia; One-Punch Man: Hero Perfection, page 135


Mysterious Beings
Unaffiliated Crablante Vaccine Man Marugori Subterranean King  (Subterranean People) • Kombu Infinity170,000-Year Magicicada Nymph 170,000-Year Magicicada Adult Demonic Fan Pesky ClownPiggy Bancon Deep Sea King  (Seafolk) • Personification Of A Light Pull CordSurprise-Attack Plum Grizzly NyahSky King  (Skyfolk) • Game-Berus Octopus Claw Man Suppon Giant Crow Tongue StretcherEagle Hawk Falcon Kite Lord Great White Jumping Spider Giant Snowman Himaaku Hotdog GigakiganDeloreanThree Eyed Ghost Scaledon Enamel Pot Bellee Man-Eating Capybara Twin-Headed Tsuchinoko Kenzan Rat Forest King  (Forest Tribe) • Withered Sprout Macho Daikon Black Roast Alien SeerAutumn Phantom Red Golden-ringed Dragonfly
Dark Matter Thieves Boros Geryuganshoop Melzargard Groribas Dark Matter Gunner 
The Organization G4 G5 
House of Evolution Carnage Kabuto Beast King Armored GorillaKamakyuri Ground Dragon Frog Man Slugerous Mosquito Girl 
Anime-Only Mysterious Beings Super Custom YO649Z Mk. II Ancient King  (Terror Lizard Clan) • Fish of DarknessPluton Men's Esthetician Man *
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