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

Male. In his 20s. Alias: The Ashura. 182cm / 85kg. Fighting Style: Niko Style. Flame Kata Offensive movement focusing on speed and power. Water Kata Defense and evasion; effectively blocking or parrying the opponent's techniques. Adamantine Kata Body hardening; used for defense by tightening muscles or for offense by hardening the fist. Redirection Kata Joint locks and flow; techniques involving breaking, twisting, and redirecting force. Arrogant and aggressive personality. Possesses the "Advance" ability. When used, his body turns a glowing red. It increases physical capabilities at the cost of straining his lifespan. The formal name is "Possessing Spirit." Niko Style Secret Technique: "Demonsbane." A counter-technique that redirects the power of an opponent's attack back through the user's limbs. ... Well, basically... (Creator's explanation limit reached) After his master and the founder of the Niko Style, Niko, died in an accident, he became the new master and successor of the style.

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

Male. Alias: The Superman. Fights by slashing opponents like Wolverine using his naturally powerful fingertips and nails. He boasts about being a superhuman, but he's actually a bit of a weakling compared to the top tiers. He was formerly Ohma's enemy but is now on friendly terms.

Male. Alias: The Devil. 188cm / 94kg. Member of the Kure Clan. Enjoys fighting for the sake of it. Max-level madness. Rather than using refined martial arts, he tends to fight with overwhelming brute strength. Uses "Removal," which is similar to Ohma's Advance. When used, his body turns a glowing 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 member of the Kure Clan and a capable fighter. Ohma himself shows very little interest in Karura.

Male. Alias: The Thai God of War. Uses Boxing and Muay Thai. The strongest striker. Taciturn and serious personality. Formerly a bodyguard for the King of Thailand.

Male. Alias: The Fang of Metsudo. 201cm / 128kg. In his 30s. He doesn't stick to one martial art; he observes the opponent's style and then uses a counter-style. His eyes glaze over and he goes into a frenzy when he fights. One of the strongest fighters.

Male. Alias: The Howling Spirit. Uses Lethwei, a martial art similar to Muay Thai. Extremely loud and easily excited. Since the age of five, his bones have repeatedly broken and healed, making his skeleton incredibly dense and hard.

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