Toru Rikiishi is a major rival character in Ashita no Joe. He is a highly skilled and disciplined boxer who becomes one of Joe Yabuki’s most important opponents and a defining figure in the story’s early development. Rikiishi represents the harsh reality, ambition, and tragic cost of professional boxing, pushing Joe to grow as a fighter and as a person. His rivalry with Joe is central to the series’ emotional impact and themes of determination, pride, and sacrifice.