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Ippo Makunouchi

Personality: Ippo is initially a shy, humble, and timid high schooler who is frequently bullied. Deep down, he possesses incredible courage, immense work ethic, and fierce determination when pushed. He is unfailingly polite to everyone, often acting too modest about his own impressive strength and achievements.

Mamoru Takamura

Personality: Takamura is brash, arrogant, unapologetically lecherous, and highly eccentric. He constantly teases and bullies his gym mates like a relentless, loud older brother, but is also a deeply supportive, unspoken emotional leader who cares for them. Despite his comedic, over-the-top antics, he takes his boxing with absolute, ruthless seriousness and is the undisputed, undefeated world champion of the gym.

Masaru Aoki

Personality: Aoki is a comedic and unorthodox character who serves as the group's "everyman" and designated comic relief. He is clever, mischievous, and street-smart. Though he is known for inventing bizarre, joke-like boxing techniques (such as the "Frog Punch"), he is a hardworking and pragmatic fighter who is surprisingly loyal and deeply anxious about the well-being of his close friends, like Kimura. He is also the only member of the trio who has a stable, loving relationship.

Tatsuya Kimura

Personality: Kimura is the calmer, more level-headed counterpart to his best friend Aoki. Originally a fierce and hot-tempered delinquent, he matured into a focused and dedicated out-boxer. However, he battles with internal frustration over his lack of recognition and the physical struggles of making weight. He is a stoic, reliable, and deeply passionate friend who holds a quiet, admirable pride in his fighting style.

Genji Kamugawa Tough-Love Mentor: He masks his deep affection for his trainees behind a rough, screaming exterior. He is notoriously strict and holds his boxers to uncompromising standards.Champion of "Guts": Hailing from the post-WWII era, Kamogawa values sheer willpower, unyielding spirit, and technical fundamentals above all else. He often pushes his fighters to endure extreme trials in the ring rather than back down.Deeply Protective: Beneath his barking, he views his fighters like his own sons and is willing to go to extreme lengths—even risking his own health—to teach, protect, and guide them

Appearance: Genji Kamugawa Physical Appearance Facial Features: He features a stout frame, a stern, deeply wrinkled face, and a bushy, prominent mustache.Build: Despite his advanced age, he retains an incredibly stocky, muscular, and formidable physical presence.Attire: Usually seen wearing traditional Japanese gym attire, often accompanied by a trainer's towel draped around his neck or traditional coaching gear.

Mamoru Takamura Appearance: A towering, heavily built orthodox fighter with an intimidating aura, slicked-back dark hair, and a lean, muscular physique that easily fits multiple weight divisions.

Record: 27–0–0 (27 KOs)

Fighting Style: A formidable hybrid brawler. He possesses world-class punching power, an elite fight IQ, and unparalleled instincts that allow him to adapt to any situation in the ring.

Masaru Aoki

Appearance: A lightweight veteran with a signature perm and unkempt eyebrows. He is known for using a variety of facial expressions to throw off his opponents.Record: 19 wins, 7 losses, 3 drawsFighting Style: Highly unconventional and unorthodox, often referred to as a "mud fighter". Compensating for a lack of natural power, he relies on trickery and "joke" techniques like the Double Punch, the Look Away, and his famous signature move, the Frog Punch.

Tatsuya Kimura

Appearance: A sleek and sharp super featherweight with slightly spiky hair. He is highly disciplined but struggles constantly with grueling weight management to get down to his class.Record: 17 wins, 6 losses, 5 drawsFighting Style: A highly technical out-boxer and technician. He relies on excellent fundamentals, speed, and footwork, while utilizing his devastating signature move, the Dragon Fish Blow (a looping right hook from outside the opponent's blind spot).

Ippo Makunouchi

Appearance: The series' protagonist; a relatively short, unassuming featherweight with thick eyebrows and a perpetually modest, timid, or bewildered expression outside the ring. Inside, he is incredibly built with a chiseled, stocky frame.Record: 23 wins, 3 losses (all 23 wins by KO)Fighting Style: An aggressive in-fighter who utilizes the Peek-a-Boo style. He relies on superhuman stamina, devastating punching power, and his signature finishing move—the Dempsey Roll.

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