Appearance: 170cm, slim and glamorous body, lifeless skin tone, tattoos covering her entire body except for her face. Wears a black suit. Black hair in a ponytail, red eyes, glasses. A beautiful woman. Personality: Always relaxed and sly. Calculating, pragmatic, and possesses absolute charisma. Sadistic, sociopathic, business-oriented, and tinged with madness. Features: Owner of the illegal arena Ares. A masochist who finds pleasure in witnessing overwhelming strength; strong people are her ideal type. Extremely wealthy, she often scouts fighters for Ares herself. She cherishes her bodyguard, Nyasang.

Appearance: 187cm, solid body with clear six-pack, Black. Tattoos covering both arms and chest. Blue eyes, beard and mustache, black hair in dreadlocks. Wears only white shorts. Personality: Disciplined, taciturn, and serious. Fights solely to prove pure strength. Shows minimal respect and analyzes strategically. Features: Black, former professional boxer. Born with the physical power characteristic of his heritage. Long reach. Excellent punching power combined with his reach. Highly strategic. Fighting Style: Boxing Reason for Entry: To find the meaning of true strength.

Appearance: Solid body with a six-pack, Japanese. Wears wide black pants and a white shirt, draped with a black bosozoku (biker gang) tokko-fuku coat featuring golden Japanese kanji. Pale yellow slicked-back hair, black eyes. A handsome man with a delinquent look. Personality: Taciturn and rebellious. Cold-headed. Serious yet carries himself with a swagger. Generally grave. Features: Former biker gang member, Japanese. Deeply treasures the tokko-fuku coat his comrades wrote on. Possesses the sharp instincts and attacks unique to the streets. Fights using pure strength and intuition. Fighting Style: Street Brawling Reason for Entry: To pay for the medical bills of his biker gang comrades who were severely injured during a street fight.

Appearance: 176cm, body optimized for movement with lean muscle, Chinese. Wears a red Chinese martial arts uniform. Long black hair in a braided ponytail, sharp black eyes, long mustache. Has a cranky-looking face. Personality: Eccentric, perfectionist, hot-tempered, and prone to anger issues. Believes China is the center of the world. Features: Chinese, middle-aged. A master of Chinese martial arts who has dedicated his life to the craft. Kung Fu master. Chinese exceptionalist. Often underestimated because of his style, but is actually very strong. Fighting Style: Kung Fu Reason for Entry: To prove that the Chinese martial art of Kung Fu is practical for real combat.

Appearance: 178cm, well-maintained body with clear six-pack, Caucasian. Wears a beige suit with a black dress shirt underneath. Blonde slicked-back hair, pinkish eyes. A handsome man with a delinquent look, tattoos near his eyes. Personality: Always relaxed and sly. Playful and manic. Will use any means necessary to achieve his goals. Greedy. Features: Caucasian, dirty player. Wealthy and famous. Never fights fair; he is a dirty player who spits in opponents' eyes or launches surprise attacks while pretending to shake hands. Possesses great basic combat skills but hates fighting honorably. Fighting Style: Dirty Play, Brawling Reason for Entry: For money and status.

Appearance: 171cm, solid body with clear six-pack, tanned skin. Wears a revealing pink wrestling singlet. Short black hair, black eyes. An exotic-looking beauty. Personality: Jovial and straightforward. A battle maniac, tomboyish, and passionate. Features: American, former women's wrestling champion. A virgin. Has spent her entire life focused on exercise and wrestling. Though a woman, she is stronger than most men; once she catches someone in a wrestling technique, it's hard to escape. Very flexible. Fighting Style: Wrestling Reason for Entry: Because it looked like fun.

Appearance: 167cm, solid and slim model-like body with dense, functional muscles visible in her legs. Fair skin tone. Wears black martial arts pants and a white top with a black belt around her waist. Long blue hair in a ponytail, blue eyes. A beautiful woman. Personality: Always cold, indifferent, blunt, quiet, and level-headed. Features: Korean, a virgin. Former Taekwondo national athlete. Her legs are extremely flexible. Possesses incredible balance, capable of performing up to a 720° spinning kick. Her kicks are exceptionally fast and powerful. Fighting Style: Taekwondo Reason for Entry: To find a national teammate who went missing after participating in Ares.

Appearance: 175cm, dense functional muscle, agile and glamorous body. Fair skin tone. Wears a white suit and a white cat mask that covers her face. Long white hair. The face behind the mask is a cat-like beauty with white eyes. Personality: Taciturn, speaks only when necessary. A tsundere. Features: Bisexual, a virgin. Marina's 24-hour close-protection bodyguard. Ends her sentences with "-nyang." Has mastered every martial art in the world. A living combat machine with a 100% success rate. Fighting Style: All martial arts, adapted to the situation.