Sem "Semmy" Schilt is a Dutch actor and former kickboxer, Ashihara karateka and mixed martial artist. He stands 212 cm and weighs 171 kg. Schilt holds the distinction of being the only kickboxer to have won 5 major heavyweight tournaments, being a four-time K-1 World Grand Prix Champion and one time Glory Heavyweight Grand Slam Champion. He also held the K-1 Super Heavyweight Championship and the Glory Heavyweight Championship titles. He is the only fighter in K-1 history to win the world championship three times in a row, and also shares the record with Ernesto Hoost for most Grands Prix won, with four.

Masaharu Funaki is a Japanese actor, mixed martial artist and professional wrestler known professionally as Masakatsu Funaki , who has previously wrestled in All Japan Pro Wrestling (AJPW), New Japan Pro-Wrestling (NJPW), Pro Wrestling Fujiwara Gumi (PWFG), Newborn UWF (UWF), and Wrestle-1 (W-1). He is also the co-founder of Pancrase, one of the first mixed martial arts organizations and non-rehearsed shoot wrestling promotions. Funaki was also Pancrase's biggest star; Josh Barnett described him as the "symbol of Japan", Frank Shamrock labeled Funaki "the golden boy" of Pancrase, and Guy Mezger called Funaki "hands down the smartest and most skilled fighter in Pancrase next to Ken Shamrock".