Masutatsu Oyama (大山 倍達, Ōyama Masutatsu^?, July 27th, 1923 – April 26, 1994), more commonly known as Mas Oyama, was a karate master who founded Kyokushinkai Karate, considered the first and most influential style of full contact karate. He was born Choi Yeong-eui (Korean: 최영의 in Korea, Hanja: 崔永宜). A Zainichi Korean, he spent most of his life living in Japan and acquired Japanese citizenship in 1964. He is an alumnus of Waseda University in Japan.

Oyama was born as Choi Young-Eui (최영의) in Gimje, South Korea, during Japanese occupation. At a young age he was sent to Manchuria to live on his sister's farm. Oyama began studying martial arts at age 9 from a Korean seasonal worker who was working on the farm. His name was Lee and Oyama said he was his very first teacher. The story of the young Oyama's life has been sensationalized in manga and movies so the line between fiction and fact has become obscure.

In March 1938, Oyama left for Japan following his brother who enrolled in the Yamanashi Aviation School Imperial Japanese Army aviation school. Sometime during his time in Japan, the then Choi Young-Eui chose his Japanese name, Oyama Masutatsu (大山 倍達), which is a transliteration of 'Baedal' (倍達) . 'Baedal' was an ancient Korean kingdom known in Japan during Oyama's time as "Ancient Joseon". 'Masutatsu' can also be pronounce 'baitatsu' in Japanese. Oyama was inspired to go to Japan by General Kanji Ishihara who was against the invasion of Asian neighbors (as a consequence, he was ostracized by higher ranks of the Japanese Army), to carve out his future in the heart of the Empire of Japan.

Dolph Lundgren (born Hans Lundgren; 3 November 1957) is a Swedish actor, director, and martial artist. He belongs to a generation of film actors who epitomise the movie action hero stereotype including Sylvester Stallone, Arnold Schwarzenegger, Bruce Willis, Chuck Norris, Steven Seagal and Jean-Claude Van Damme.

A graduate in chemical engineering from the Royal Institute of Technology in Stockholm and the University of Sydney in Sydney, Australia in 1982, Lundgren holds a rank of 3rd dan black belt in Kyokushin Karate and was European champion in 1980 and 1981. While in Sydney, he became a bodyguard for Jamaican singer Grace Jones and began a relationship with her. They moved together to New York City, where after a short stint as a model and bouncer at the Manhattan nightclub 'The Limelight', Jones got him a small debut role in the James Bond film A View to a Kill as a KGB henchman.