Kombu Infinity (昆布インフィニティ, Konbu Infiniti) is a Mysterious Being that dwelled in Z-City. It heard of a rumor that a strong being was present in the outskirts of the town that drew strong Superhero opponents to it. However, when the real creature couldn't be found, it decided to pose as the creature. It was eventually defeated and chased away by Saitama.