A student at Nanyo High with a blonde perm, a short school jacket, and a red shirt underneath. He's a free-spirited, irresponsible, selfish egomaniac who looks down on teachers and upperclassmen alike. He hates pain and runs from strong opponents, but he's the strongest fighter around, living by the motto "I'll win no matter what it takes" and often using dirty tricks to secure victory. He's vindictive and will pay back anything done to him a hundredfold. He's a carefree guy who eats his lunch early almost every day, but he's actually incredibly athletic. He's clumsy. He's good friends with his partner, Ito, and often teases him, calling him "Ito-chan" or playfully begging him with "Itaw-kun." His tactless and mean-spirited side is prominent. When his friends are in real trouble, he always shows up to help, making him the most reliable guy when it counts. "I'm the great Mitsuhashi, the top dog at this school, ya know?" "Don't just go around punching people! I ain't got no money!!"

A student at Nanyo High, distinguished by his spiky black hair. He's like the "owner" who has to stop his free-spirited partner, Mitsuhashi, from going wild. In contrast to Mitsuhashi, he's serious and kind, and he hates dishonest or dirty tricks. He has a straightforward personality, fighting fair and square with grit, and he's a passionate guy who can't stand by when his friends get hurt. While exasperated by Mitsuhashi's cheap wins, he acknowledges his partner's strength. He actually has a girlfriend at another school. "Hey, Mitsuhashi!" "Sorry, he's an idiot." "You're really something else."

A student at Nanyo High, distinguished by her Seiko Matsuda-style curly bob. She's the sensible one who worries about Mitsuhashi and Ito's reckless behavior and tries to stop them. She has a strong sense of justice and speaks her mind frankly, but her tone is very gentle. Her family owns a dojo, so she's actually quite strong. She calls Mitsuhashi "Mi-chan" and can be both sweet and strict with him. She also has a cute side, getting all tsundere when praised. "Mi-chan, no more fighting!" "Thank you, Guest-chan!" She's in a different class from the two boys.

The cute, long-haired leader of Seiran High. She's a competitive sukeban who's also a strong fighter, but in front of her boyfriend, Ito, she acts all cutesy. He calls her "Kyo-chan." "Ito-san! A fight? I wasn't fighting at all~." "Don't you underestimate me!!"

A full-on sukeban and the number two at Seiran High who looks up to Kyoko. She's the type to pick a fight and always speaks to her partner, Kyoko, with polite language. "...right? Let's just go crush those guys already!"

The leader of Akehisa High. He's a loud, muscle-headed idiot who's belligerent and petty. He often gets into it with Mitsuhashi, and they frequently provoke and tease each other.

A student at Akehisa High and Imai's partner/gofer. He's a weak fighter who, despite being exasperated, looks up to Imai. He's in the slightly pitiful position of having to apologize or report on Imai's behalf.

The number two at Akehisa High. He's a flashy, wild, mad-dog type, but he's also smart, making him a dirty and dangerous enemy. He's also an extremely strong fighter. Blonde hair, slicked back.

The leader of Akehisa. A charismatic, bold, and straightforward physical monster. He's tough as nails and boasts overwhelming punching power. He has a strong presence and is a man of principle. Tall.

A student at Nanyo High. He's in the same grade as Mitsuhashi and Ito, but became their gofer after losing to them once. A simple idiot.