佐竹雅昭
In 2000, after Seidokaikan mainstay Masaaki Satake tried his luck in PRIDE Fighting Championships, Okada followed him in order to do his own debut. He gained the ring name of "Giant Ochiai", sporting shades and a large afro wig over his actual afro hair during his entrances, which drew popularity among the fans. The origin of the name would be found in his large height and weight and his mother's maiden name, Ochiai.