UFC 4: Revenge of the Warriors was a mixed martial arts (MMA) event held by the Ultimate Fighting Championship (UFC) on December 16, 1994, at the Expo Center Pavilion in Tulsa, Oklahoma. The event was seen live on pay-per-view, and later released on home video.

UFC 4 used an eight-man tournament format, with the winner receiving $64,000. The event also featured three alternate fights. All seven tournament fights were shown on the live pay-per-view broadcast, as well as the Jason Fairn vs. Guy Mezger alternate fight.

The tournament had no weight classes or weight limits. Each match had no time limit or rounds, therefore no judges were used for the night. The referee for the night was "Big" John McCarthy. Royce Gracie won the event by defeating Dan Severn with a triangle choke. The card also featured the notorious fight between Keith Hackney and Joe Son; Hackney won via submission after landing a series of unanswered strikes to the groin of Joe Son.

Play-by-play announcer Bruce Beck and color commentator Jeff Blatnick were paired together for the first time on the pay-per-view and became the regular commentary team on UFC broadcasts up to and including UFC 15. They were joined by regular contributor Jim Brown.

Royce Gracie (Portuguese: [ˈʁɔjsi ˈɡɾejsi], English: /ˈrɔɪs ˈgreɪsiː/; born December 12, 1966) is a Brazilian professional mixed martial artist, a UFC Hall of Famer and Brazilian Jiu-Jitsu practitioner. A legend and pioneer in the sport of mixed martial arts, he is widely considered to be the most influential figure in the history of modern MMA.

Gracie gained fame for his domination in the Ultimate Fighting Championship. He became known for beating opponents much larger than he was, and between 1993 and 1994, he was the tournament winner of UFC 1, UFC 2, UFC 4, and fought to a draw with Ken Shamrock in the championship match in the Superfight at UFC 5. Gracie popularized Brazilian Jiu-Jitsu and revolutionized mixed martial arts with his results contributing to the movement towards grappling and cross-training in the sport.

He holds the most submission victories in UFC history with 11, which he earned between UFC 1 and UFC 4.

Royce is a member of the Gracie family. He is the son of Hélio Gracie (Helio along with his older brother Carlos Gracie are the originators of Gracie Jiu-Jitsu—Modern Brazilian Jiu Jitsu) and spent his childhood in Rio de Janeiro, Brazil. As a toddler, Gracie learned Jiu-Jitsu from his father and his older brothers Rorion, Relson, and Rickson Gracie. He began competing at the age of 8 and by the time he was 16 had attained the level of blue belt.

Kenneth Wayne Shamrock (born Kenneth Wayne Kilpatrick; February 11, 1964) is an American mixed martial artist, UFC Hall of Famer and professional wrestler. Shamrock emerged as one of the biggest stars in the history of mixed martial arts, headlining over 15 main events and co-main events in the Ultimate Fighting Championship and Pride Fighting Championships during the course of his career and set numerous pay per view records with his drawing power. Shamrock is widely considered to be a legendary figure and icon in the sport of mixed martial arts. Shamrock was named The World's Most Dangerous Man by ABC News in a special entitled "The World's Most Dangerous Things" in the early part of his UFC career, a moniker which has become synonymous as his nickname.

Shamrock became known early on in the UFC for his rivalry with Royce Gracie. After fighting to a draw with Gracie in the inaugural Superfight, he became the first UFC Superfight Champion after defeating Dan Severn at UFC 6; the title was eventually renamed the UFC Heavyweight Championship when weight categories were introduced to the UFC. He was also the first foreign MMA Champion in Japan, winning the title of King of Pancrase. During his reign as the UFC Superfight Champion, he was widely considered the #1 mixed martial artist in the world. Shamrock was also ranked by Inside MMA as one of the top 10 greatest mixed martial arts fighters of all time.

Obie Trice III (born November 14, 1977) is an American rapper and songwriter. He began rapping at the age of 11, and is most known for his time spent signed to Shady Records. Obie Trice has formed his own record label, Black Market Entertainment.

Obie Trice III was born and raised in Detroit, Michigan by his mother, along with three brothers. He is of African American descent. Trice was given a karaoke machine by his mother when he was eleven and he used it to rhyme over instrumentals from artists such as N.W.A. By the age of fourteen, he was attending rap battle spots around Detroit, notably including the Hip Hop Shop, on which Trice commented,

Obie Trice went by the name of Obie 1 during this time, but when he first met Proof, who was about to introduce him at the Hip Hop Shop, Proof asked him, "What's your name? Your real name, no gimmicks." He was then introduced as Obie Trice, and has kept his real name as his rap name. Trice was introduced to Eminem through D12 member Bizarre. Eminem was impressed when Trice freestyled for him in a car park through a window, whilst Eminem was in a car. Later, Trice received a call from his manager informing him that he would be having dinner with Eminem, and later that night they went to a Kid Rock party.

Bruce Lee (born Lee Jun-fan; 27 November 1940 – 20 July 1973) was a Chinese AmericanHong Kong actor,martial arts instructor, philosopher, film director, film producer, screenwriter, and founder of the Jeet Kune Do martial arts movement. He is widely considered by many commentators, critics, media and other martial artists to be the most influential martial artist and pop culture icon of the 20th Century. He is often credited with changing the way Asians were presented in American films.

Lee was born in San Francisco to parents of Hong Kong heritage but was raised in Hong Kong until his late teens. Lee returned to the United States at the age of 18 to claim his U.S. citizenship and receive his higher education. It was during this time that he began teaching martial arts, which soon led to film and television roles.

His Hong Kong and Hollywood-produced films elevated the traditional Hong Kong martial arts film to a new level of popularity and acclaim, and sparked a major surge of interest in Chinese martial arts in the West in the 1970s. The direction and tone of his films changed and influenced martial arts and martial arts films in Hong Kong and the rest of the world, as well. He is noted for his roles in five feature-length films: Lo Wei's The Big Boss (1971) and Fist of Fury (1972); Way of the Dragon (1972), directed and written by Lee; Warner Brothers' Enter the Dragon (1973) and The Game of Death (1978), both directed by Robert Clouse.