UFC 46: Supernatural was a mixed martial arts event held by the Ultimate Fighting Championship on January 31, 2004, at the Mandalay Bay Events Center in Las Vegas, Nevada. The event was broadcast live on pay-per-view in the United States, and later released on DVD.

Headlining the card was a Light Heavyweight championship bout between Randy Couture and Vitor Belfort. The evening marked the UFC debut of future welterweight champion Georges St-Pierre.

The total fighter payroll for UFC 46 was $540,500.

Vitor Belfort: $130,000 ($100,000 for fighting; $30,000 win bonus)
Randy Couture: $120,000 ($120,000 for fighting; win bonus would have been $80,000)
Frank Mir: $90,000 ($60,000 for fighting; $30,000 win bonus)
Matt Hughes: $55,000 ($55,000 for fighting; win bonus would have been $55,000)
BJ Penn: $50,000 ($25,000 for fighting; $25,000 win bonus)
Carlos Newton: $30,000 ($30,000 for fighting; win bonus would have been $0)
Matt Serra: $16,000 ($8,000 for fighting; $8,000 win bonus)
Renato Verissimo: $10,000 ($5,000 for fighting; $5,000 win bonus)
Josh Thomson: $8,000 ($4,000 for fighting; $4,000 win bonus)
Lee Murray: $6,000 ($3,000 for fighting; $3,000 win bonus)
Georges St. Pierre: $6,000 ($3,000 for fighting; $3,000 win bonus)
Hermes Franca: $6,000 ($6,000 for fighting; win bonus would have been $6,000)
Wes Sims: $5,000 ($5,000 for fighting, win bonus would have been $5,000)
Jorge Rivera: $3,000 ($3,000 for fighting; win bonus would have been $3,000)
Karo Parisyan: $3,000 ($3,000 for fighting; win bonus would have been $3,000)
Jeff Curran: $2,500 ($2,500 for fighting; win bonus would have been $2,000)

Lee Lamrani Ibrahim "Lightning" Murray (Arabic: لي العمراني إبراهيم موراي) is an English-Moroccan mixed martial artist and convicted bank robber. He was sentenced to 10 years in jail in June 2010 for masterminding a 2006 £53 million armed raid in Kent, UK. His term was then extended to 25 years on 30 November 2010.

On his mother Barbara Murray's side, Lee's family hails from Bermondsey, a densely populated part of south London located between Tower Bridge and the Old Kent Road, and also an area that has been a traditional breeding ground for professional criminals, especially armed robbers. Following World War II, the Murrays were among thousands of working-class families relocated from bomb-ravaged inner London to council estates on the outskirts of the capital. The particular location of the Murray residence was 6 Godstow Road in Abbey Wood, located between Shooter's Hill - so named because it was once a notorious area for highway robbery - and the River Thames, in the southeast corner of Greater London.

Jacob Christopher "Tito" Ortiz (English: /tɪtɵ ɔərtɪs/) (born January 23, 1975) is an American mixed martial artist and former UFC Light Heavyweight Champion, having held the title from April 14, 2000 to September 26, 2003. Along with fighters like Randy Couture and Chuck Liddell, he was one of the sport's early stars. Ortiz ultimately became the biggest pay-per-view draw of 2006 for his fights with Liddell, Forrest Griffin, and Ken Shamrock.

Outside of his fighting career, Ortiz is the CEO of the Punishment Athletics MMA equipment and clothing line. He also owns an MMA training gym called Punishment Training Center, which is located in Huntington Beach, CA.

Jacob Christopher Ortiz was born to Samuel and Joyce Ortiz. He received his nickname "Tito," which means tyrant, from his father when he was a year old. He is the fourth child of his mother, Joyce, who had three sons from a previous marriage. His mixed heritage (Mexican father, American mother) has been reflected in his ring entrances as he has borne both Mexican and American flags.

Randy Duane Couture (pronounced /koʊˈtʊər/; born June 22, 1963) is an actor, retired American mixed martial artist, collegiate and Greco-Roman wrestler. During his tenures in the Ultimate Fighting Championship (UFC), Couture became a three-time UFC Heavyweight Champion, two-time UFC Light Heavyweight Champion, an Interim UFC Light Heavyweight Champion, and was the UFC 13 Heavyweight Tournament Winner. Couture is the first fighter to hold two UFC championship titles in two different divisions (heavyweight and light heavyweight). Couture has competed in a record 15 title fights. He holds the most title reigns in the UFC with five. His last fight with Lyoto Machida marked his 24th fight in the UFC, the third most amount of fights in the UFC (Tito Ortiz is first with 26 and Matt Hughes is second with 25). Couture is one of the first members of the UFC Hall of Fame. He is the only person over the age of 40 to have won a UFC championship fight, having done so four times.^{[citation needed]}

Couture was an Olympic wrestling alternate and has lived in Corvallis, Oregon, throughout much of his career, where he served as an assistant wrestling coach and a strength and conditioning coach for Oregon State University. He established Team Quest with Matt Lindland and Dan Henderson, a training camp for fighters, based out of Gresham, Oregon, and headed by coach Robert Folis. In 2005, Couture moved to Las Vegas, where he opened his own extensive chain of gyms under the name Xtreme Couture. He currently trains at his Las Vegas-based gym. Couture partnered with Bas Rutten in the opening of Legends Gym in Hollywood, California.

Vítor Vieira Belfort (Portuguese pronunciation: [ˈvitoʁ viˈejɾɐ bɛwˈfɔʁ]; born April 1, 1977) is a Brazilian mixed martial artist and former UFC Light Heavyweight Champion. Belfort was born in Rio de Janeiro and studied jiu-jitsu with the Gracie family, namely Carlson Gracie. He received a black belt under Carlson and currently trains with Xtreme Couture, fighting in the middleweight division. He is currently ranked as the #3 middleweight in the world by MMA Weekly.

Vítor was born on April 1, 1977 in Rio de Janeiro, Brazil to a French father and a Greek mother. Belfort is married to Joana Prado and together they have three children, a son named Davi (born February 5, 2005), a daughter named Victoria (born October 31, 2007), and a daughter named Kyara (born June 7, 2009).

Belfort also had a small part in a reality show on Brazilian television and appeared next to his wife when she was photographed for the Brazilian edition of Playboy.

On January 9, 2004, Vítor's sister, Priscila Belfort disappeared and the relatives received no information about her. In August 2007, a woman (identified as Elaine Paiva) confessed that she participated in her kidnapping and killing and that she was kidnapped to pay off a four thousand dollar debt Paiva had with drug dealers. Paiva was arrested along with three others alleged to be involved in the kidnapping. The group allegedly buried her body in the woods in Rio de Janeiro where police conducted searches but her remains have never been found. Her family however do not accept this version and believe that Priscila is still alive somewhere. Vítor still maintains a missing sign in the Brazilian version of his website.