||This article needs additional citations for verification. (August 2007)|
July 27, 1923|
Gimje, Jeollabuk-do, Korea
|Died||April 26, 1994
|Rank||10th dan karate and 4th dan kosen judo|
|Spouse||Chiyako Oyama (1926–2006)|
|Notable students||Steve Arneil, Hideyuki Ashihara, Sonny Chiba, Tae Hong Choi, Bobby Lowe, Akira Masuda, Kenji Midori, Tadashi Nakamura, Terutomo Yamazaki|
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 (Hangul: 최영의 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.
Early life 
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 pronounced '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.
One story of Oyama's youth involves when Lee gave young Oyama a seed which he was to plant; when it sprouted, he was to jump over it one hundred times every day. As the seed grew and became a plant, Oyama later said, "I was able to jump between walls back and forth easily." The writer, Ikki Kajiwara and the publisher of the comics based the story on the life experience Oyama spoke to them about- thus the title became "Karate Baka Ichidai" (Karate Fanatic).
Oyama aspired to serve the Imperial Army during the war. He wrote a letter to the highest-ranking officers with the blood from his fingers to apply for the Kamikaze pilot. Because it was the elite course he was rejected the first few times because of his back ground however, later Oyama recalls, "After the general saw I wrote in my own blood he knew I was ready to serve. The next week I was supposed to leave as Kamikaze, never returning to my home country." However, on the day of his mission, his airplane malfunctioned.
He later said in an interview for TV program," I had breakfast with my comrades ready to serve our country. In the evening when I returned for supper, the chairs were empty. There were no words to describe what I felt but I know I was given a chance to do something." One of the last TV programs Oyama taped was for Fuji Network (Japan) for a program called, 'Itsu Mitemo Haranbanjyo' (Always Stormy and Full of Drama).
In 1963, Oyama wrote "What is Karate" which became a best seller in the US and sold million copies all over the world. It is still considered the "Bible of Karate" to this day. It was translated into Hungarian, French and English.
Post–World War II 
In 1945 after the war ended, Oyama left the aviation school. He began "Eiwa Karate Research Center" in Suginami ward but closed it quickly because "I soon realized that I was an unwanted Korean. Nobody would rent me a room." He finally found a place to live at in Tokyo. This is where he met his future wife whose mother ran a dormitory for university students.
In 1946, Oyama enrolled in Waseda University School of Education to study sports science.
Wanting the best in instruction, he contacted the Shotokan dojo (Karate school) operated by Gigō Funakoshi, the second son of karate master and Shotokan founder Gichin Funakoshi. He became a student, and began his lifelong career in Karate. Feeling like a foreigner in a strange land, he remained isolated and trained in solitude.
Oyama attended Takushoku University in Tokyo and was accepted as a student at the dojo of Gichin Funakoshi. He trained with Funakoshi for two years, then studied Gōjū-ryū karate for several years with Mr. So Nei Chu (소네이쥬, 1907–?), a senior student of the system's founder, Chojun Miyagi. Mr. So was a fellow Korean from Oyama's native province.
Korea had been officially annexed by Japan since 1910. During World War II (1939–1945) there was much unrest throughout Korea. As South Korea began to fight against North Korea over political ideology, Oyama became increasingly distressed. He recounts, "though I was born and bred in Korea, I had unconsciously made myself liberal; I felt repulsion against the strong feudal system of my fatherland, and that was one of the reasons which made me run away from home to Japan." He joined a Korean political organization in Japan to strive for the unification of Korea, but soon was being targeted and harassed by the Japanese police. He then consulted with Mr. So.
Around the time he also went around Tokyo getting in fights with the U.S. Military Police. He later reminisced those times in a television interview, "Itsumitemo Haran Banjyo" (Nihon Television), "I lost many friends during the war- the very morning of their departure as Kamikaze pilots, we had breakfast together and in the evening their seats were empty. After the war ended, I was angry- so I fought as many U.S. military as I could, until my portrait was all over the police station." At this time, Mr. So suggested that Oyama retreat to a lone mountain for solace to train his mind and body. He set out to spend three years on Mt. Minobu in Yamanashi Prefecture, Japan. Oyama built a shack on the side of the mountain. One of his students named Yashiro accompanied him, but after the rigors of this isolated training, with no modern conveniences, the student snuck away one night, and left Oyama alone. With only monthly visits from a friend in the town of Tateyama in Chiba Prefecture, the loneliness and harsh training became grueling. Oyama began to doubt his decision, so he sent a letter to the man who suggested the retreat. Mr. So replied with encouragement to remain, and suggested that he shave off one eyebrow so that he would not be tempted to come out of the mountain and let anyone see him that way. Oyama remained on the mountain for fourteen months, and returned to Tokyo a much stronger and fiercer Karateka.
Oyama gave great credit to reading "The Book of Five Rings" by Miyamoto Musashi - a famous Japanese swordsman, to change his life completely. He recounts this book as being his only reading material during his mountain training years.
He was forced to leave his mountain retreat after his sponsor had stopped supporting him. Months later, after he had won the Karate Section of Japanese National Martial Arts Championships, he was distraught that he had not reached his original goal to train in the mountains for three years, so he went into solitude again, this time on Mt. Kiyosumi in Chiba Prefecture, Japan and he trained there for 18 months.
Founding Kyokushin 
In 1953 Oyama opened his own karate dojo, named Oyama Dojo, in Tokyo but continued to travel around Japan and the world giving martial arts demonstrations, including the fighting and killing of live bulls with his bare hands. His dojo was first located outside in an empty lot but eventually moved into a ballet school in 1956. Oyama's own curriculum soon developed a reputation as a tough, intense, hard hitting but practical style which was finally named Kyokushin, which means 'the search for the ultimate truth,' in a ceremony 1957. He also developed a reputation for being 'rough' with his students, often injuring them during training sessions. As the reputation of the dojo grew students were attracted to come to train there from inside and outside Japan and the number of students grew. Many of the eventual senior leaders of today's various Kyokushin based organisations began training in the style during this time. In 1964 Oyama moved the dojo into the building that would from then on serve as the Kyokushin home dojo and world headquarters. In connection with this he also formally founded the 'International Karate Organization Kyokushin kaikan' (commonly abbreviated to IKO or IKOK) to organise the many schools that were by then teaching the kyokushin style. In the same year, his dojo received a challenge from Muay Thai (Thai Boxing) practitioners. Oyama, believing that no other style was comparable to his, accepted the challenge and sent three students (Kenji Kurosaki, Tadashi Nakamura, Noboru Ōsawa) to Thailand who won 2 of the 3 fights, thus redeeming the reputation of his karate style.
In 1969, Oyama staged The First All-Japan Full Contact Karate Open Championships which took Japan by storm and Terutomo Yamazaki became the first champion. All-Japan Championships have been held at every year. Also in 1975, The First World Full Contact Karate Open Championships were held in Tokyo. World Championships have been held at four-yearly intervals since. After formally establishing Kyokushin-kai, Oyama directed the organization through a period of expansion. Oyama and his staff of hand-picked instructors displayed great ability in marketing the style and gaining new members. Oyama would choose an instructor to open a dojo in another town or city in Japan. The instructor would move to that town and usually demonstrate his karate skills in public places, such as at the civic gymnasium, the local police gym (where many judo students would practice), a local park, or conduct martial arts demonstrations at local festivals or school events. In this way, the instructor would soon gain a few students for his new dojo. After that, word of mouth would spread through the local area until the dojo had a dedicated core of students. Oyama also sent instructors to other countries such as the United States, Netherlands, England, Australia and Brazil to spread Kyokushin in the same way. Oyama also promoted Kyokushin by holding The All-Japan Full Contact Karate Open Championships every year and World Full Contact Karate Open Championships once every four years in which anyone could enter from any style.
Prominent students 
- Terutomo Yamazaki, the first champion of the All-Japan Full Contact Karate Open Championships and professional kickboxer
- Sonny Chiba, popular Japanese actor and martial artist
- Akira Masuda
- Hatsuo Royama, 9th dan, Kancho (Director) of the Kyokushin-kan International Honbu
- Tadashi Nakamura, founder of Seidō juku
- Bobby Lowe, 10th dan
- Steve Arneil, 10th dan
- Jon Bluming, 10th dan
- Hideyuki Ashihara
- Yoshiji Soeno, founder of fr:Shidokan
- Loek Hollander
- John Jarvis
- Miyuki Miura
- Howard Collins
- Shokei Matsui, a.k.a Akiyoshi Matsui. Mas Oyama's protege, 2x winner of the All Japan Open ('85, '86), successfully challenged the renowned "100-Man-Kumite" in record time, and became the youngest ever, Champion of the World Open Karate Tournament in 1987. Mas Oyama gave Matsui the name, "Shokei". In 1994 on his deathbed, Oyama bequeathed Matsui the directorship of the IKO Kyokushinkaikan. Shokei Matsui is President (Kancho) of the IKO Kyokushinkaikan, headquartered in Tokyo, Japan.
- Tae-hong Choi, one of the pioneers for taekwondo in the United States
- Peter Urban, Founder of USA GoJu Karate & Grand Patriarch of All American GoJuRyu Karate Do Styles, Systems, & Organizations.
- Nicholas Pettas, Last Uchi Deshi(1000days living in Student of Mas. Oyama) also see K-1 Japan Champion 2001
Public demonstrations 
Oyama tested himself in a kumite, a progression of fights, each lasting two minutes, and each after the featured participant wins. Oyama devised the 100-man kumite which he went on to complete three times in a row over the course of three days.
He was also known for fighting bulls bare-handed. In his lifetime, he battled 52 bulls, three of which were purportedly killed instantly with one strike, earning him the nickname of "Godhand". Many martial artists believe that the bulls he beat were at a disadvantage, because they were tamed and tied with nose rings and rope when Mas Oyama fought them.
Oyama had many matches with professional wrestlers during his travels through the United States. Oyama said in the 1958 edition of his book What Is Karate that he had just three matches with professional wrestlers plus thirty exhibitions and nine television appearances.
Later years 
Later in life, Oyama suffered from osteoarthritis. Despite his illness, he never gave up training. He held demonstrations of his karate, which included breaking objects.
Oyama wrote over 80 books in Japanese and some were translated into other languages.
Final years 
Before dying, Oyama built his Tokyo-based International Karate Organization, Kyokushinkai, into one of the world's foremost martial arts associations, with branches in more than 120 countries boasting over 10 million registered members. In Japan, books were written by and about him, feature-length films splashed his colorful life across the big screen, and comic books recounted his many adventures.
His widow Chiyako Oyama, made a trust foundation to honor his lifelong work.
A manga about Oyama's legacy, Karate Baka Ichidai (literal title:"A Karate-Crazy Life") was published in Weekly Shonen Magazine in 1971, the manga was written by Ikki Kajiwara while the art was done by Jirō Tsunoda and Jōya Kagemaru. A 47 episode anime adaptation was released in 1973, the anime had several changes in the plot and for some reason replaced Mas Oyama with a fictional character named Ken Asuka as the main character. However the anime, although some of its plot was different from the manga was still inspired by Oyama's legacy like in the manga.
Oyama was played by Japanese actor Sonny Chiba in the martial arts film trilogy based on the manga (Ikki Kajiwara, Jirō Tsunoda and Jōya Kagemaru were credited as original creators) Champion of Death (1975), Karate Bearfighter (1975), and Karate for Life (1977). Oyama also appears in the first two films.
SNK video games character from King Of Fighters and Art Of Fighting series of games, Takuma Sakazaki (AKA Mr. Karate), was inspired by Mas Oyama. Takuma Sakazaki is the founder and grandmaster for the fictional Kyokugenryu Karate, which is heavily based on Mas Oyama's Kyokushin Karate.
Grappler Baki manga character Doppo Orochi is a master karateka based on Mas Oyama, founding his own school of Karate, Shinshinkai; the other most known Keisuke Itagaki's work, Garouden, features a mighty character, Shozan Matsuo, who's apparently again inspired by Oyama.
Fighter in the Wind, a Korean movie, depicts Oyama's young life as a Karate practitioner before he develops the kyoukushin style of Karate.
- The Kyokushin Way. ISBN 0-87040-460-1
- What is Karate? ISBN 0-87040-147-5
- This is Karate. ISBN 0-87040-254-4
- Advanced Karate. ASIN B000BQYRBQ
- Vital Karate. ISBN 2-901551-53-X
- Essential Karate. ISBN 978-0-8069-8844-3
See also 
- Lowe, Bobby. Mas Oyama's karate as practiced in Japan (Arco Pub. Co., 1964).
- Oyama, 1963, What is Karate, Japan Publications Trading Company.
- Sosai Masutatsu Oyama – 100 Man Kumite. Masutatsuoyama.com. Retrieved on 2011-05-30.
- Lorden, Michael L. (2000). Mas Oyama: The Legend, the Legacy. Multi-Media Books. p. 184. ISBN 978-1-892515-24-7.
- Sosai Masutatsu Oyama – Sosai's History. Masutatsuoyama.com. Retrieved on 2011-05-30.
- "DVD Review: The Masutatsu Oyama Trilogy". Trades. Retrieved 2011-01-18.
- "Sonny Chiba – Masutatsu Oyama Trilogy". DVD Talk. Retrieved 2011-01-19.
- "Sonny Chiba Collection: Karate For Life". DVD Talk. Retrieved 2011-01-19.
- International Karate Organization, Home of Kyokushin Karate of Sosai Mas Oyama
- International Karate Organization
- World Oyama Karate Official Site