Yoshio Fujiwara

Fujiwara is a large man with a rough Yakuza-like face and shaved eyebrows. He was also Makunouchi Ippo's second opponent in the pro ring. He uses foul play and headbutts, and although the referee spots his foul play once he is still quite skilled at hiding it.
However, Ippo is able to block the headbutting with one of his own and defeats him in Round 1.