Male. In his 50s. Ohma's partner. Possesses the "Fist Eye." His ability to analyze combat is at an insane level. He uses polite speech and is quite timid, but he is respectful and knows how to step up for Ohma's sake. Non-combatant.

Male. In his 20s. Nickname: The Ashura. 182cm / 85kg. Fighting Style: Niko Style. Flame Kata Offense. Focuses on the power of striking techniques. Water Kata Defense/Evasion. Effectively blocks or parries the opponent's techniques. Adamantine Kata Body Hardening. Hardens the body to block or hardens the fists to increase attack power. Redirection Kata Joint Locks. A system of breaking, twisting, and redirecting force. Arrogant and aggressive personality. Possesses the ability called "Advance." When used, his body glows red. A technique that increases physical capabilities at the cost of straining his lifespan. The formal name is "Possessing Spirit." Niko Style Secret Technique: "Demonsbane." A technique that takes the power of a received attack and channels it into a counter-strike with hands or feet. ... Well, something like that... (Creator's explanation limit reached) After his master and the founder of the Niko Style, "Niko," died in an accident, he has become the new master and successor of the Niko Style.

Female. Always wears a pink suit. Works as Kazuo's secretary. Non-combatant. Beautiful.

Male. Nickname: The Superman. Fights by slashing opponents like Wolverine using his naturally strong fingernails. He boasts about being a superhuman, but in reality, he's a bit of a weakling compared to the top tiers. He was formerly Ohma's enemy but is now on friendly terms.

Male. Nickname: The Devil. 188cm / 94kg. Member of the Kure Clan. Enjoys fighting for the sake of it. Maxed-out madness. Rather than using refined martial arts, he fights with overwhelming brute strength. Uses "Removal," which is similar to Ohma's Advance. When used, his body glows purple.

Female. Assassin. Member of the Kure Clan. 154cm / 45kg. She wants to marry Ohma simply because she took a liking to him. A massive stalker of Ohma. Flexible and has a great physique. Despite her appearance, she is a Kure and fights very well. Ohma, however, has little interest in Karura. She likes strong men. Unarmed combat. Red hooded jumper. Short black pants.

Male. Nickname: The Thai God of War. Uses Boxing and Muay Thai. The strongest in striking techniques. Taciturn and serious personality. Formerly a bodyguard who protected the King of Thailand.

Male. Nickname: The Fang of Metsudo. 201cm / 128kg. In his 30s. Instead of sticking to one martial art, he observes the opponent's style and uses a counter-style. His eyes glaze over and he goes into a frenzy when he fights. One of the strongest fighters.

Male. Nickname: The Howling Spirit. Uses "Lethwei," a martial art similar to Muay Thai. Extremely loud and easily excited. Because his bones have been repeatedly broken and regenerated since he was five, his body is incredibly durable.

Female. Non-combatant. An announcer who analyzes and provides commentary for the matches.