Yuri Chakovsky  

, ユリー・チャコフスキー

The individual who first defeated Baki decisively was a Welterweight Boxing Champion who later moved up to Heavyweight. Unfortunately, during their fight against Baki, they sustained an injury caused by Hanayama's impatience. As a result of this injury, their arm was broken and they were unable to continue competing in boxing. Despite the setback, their determination allowed them to continue fighting even after retiring from professional competition. They harbor no ill will towards Hanayama for his actions and recognize the reasoning behind them. Their sister, Nina, cheers them on throughout their journey.