Tatsuya Kimura - 木村 達也

Ippo's senpai and Aoki's best friend. He is the smooth, collected type and a romantic at heart, but trains as hard as anyone. His style incorporates a fast left and faster footwork and is considered by Miyata to have "no weaknesses" yet, it also doesn't have strengths either which creates Kimura's weakness. In the OVA, which was dedicated to Kimura, he is in training for his bid for the Japanese junior lightweight championship against Ryo Mashiba, he developed a devastating vertical combination known as the Dragon Fish Blow, which Kimura learned while watching his pet fish jumped up and eat his meal in front of him. Another interesting fact is that, out of all the opponents that had fought Ryo Mashiba, Kimura is the only one Ryo had feared during a match. In the past, he and Aoki were the toughest high-school thugs around, but now Tatsuya's real job is at his family's flower shop. His current record stands at 24 Matches 16-5-3 (W-L-D), with 8 KOs, and the best rank he reach is 3rd in Jr. Lightweight, because the 1st & 2nd resigned from fear of Mashiba.

Kimura is ranked 7th in the JBC Jr. Lightweight rankings. After losing to Ryo Mashiba, he announced his retirement from boxing. Shortly after, unable to stay away from boxing, he returned saying he'd spell his name in katakana (タツヤ, Tatsuya) instead of kanji (達也,, Tatsuya). Kimura's character seems to be at least partially based on former world champion "Fearless" Freddie Pendleton, who had been a journeyman fighter his entire career, yet was still able to fight on even terms with some of the best in the world with his high level of skill.

Voiced by: Keiji Fujiwara (Japanese), Grant George (English)