UFC 112: Invincible was a mixed martial arts event held by the Ultimate Fighting Championship on April 10, 2010, on Yas Island, Abu Dhabi, United Arab Emirates. Due to the time zone difference in Abu Dhabi, UFC 112 was shown live on pay-per-view in the United States at 1 pm ET (10 am PT), with a replay at the regular time of 10 pm ET (7 pm PT).

The event was the first held in the Middle East following the purchase of a 10 percent stake in the UFC parent company Zuffa by Abu Dhabi government-owned Flash Entertainment. It was also the first UFC event to be held outdoors in an open-air arena. The Concert Arena (at the Ferrari World theme park) was erected as a temporary venue for the event and was torn down the following week.

Vitor Belfort was expected to fight Anderson Silva for the Middleweight Championship; however, Belfort injured his shoulder during training and was unable to fight at the event. It was thought that Silva would instead take on Chael Sonnen, but he was ruled out due to a large cut suffered at UFC 109 in his fight with Nate Marquardt. Silva ended up fighting Demian Maia.

Dana White (born July 28, 1969) is the current President of the Ultimate Fighting Championship (UFC), a mixed martial arts organization based in the United States.

Born in Manchester, Connecticut on July 28, 1969, White grew up in Las Vegas, Nevada, Ware, Massachusetts and Levant, Maine. White is a passionate Boston Red Sox fan. During his youth, he bounced back and forth between Boston and Maine. He attended the University of Massachusetts Boston but did not finish; however, while there he did launch a boxing program for inner-city youth.

White has a background as an aerobics instructor. In 1992, White established Dana White Enterprises in Las Vegas. He conducted aerobics classes at three gyms in the Las Vegas area and began managing MMA fighters Tito Ortiz and Chuck Liddell.

While working as a manager, White learned that Semaphore Entertainment Group, the parent company of the UFC, was looking for a buyer for the UFC. White contacted childhood friend Lorenzo Fertitta, an executive at Station Casinos, and a former commissioner of the Nevada State Athletic Commission. Within a month, Lorenzo and his older brother Frank bought the UFC, with White installed as its president. White currently owns about 9% of Zuffa, LLC, the entity the Fertitta brothers created to own and manage the UFC.

Anderson da Silva (Portuguese pronunciation: [ˈɐ̃deʁsõ ˈsiwvɐ]; born April 14, 1975) is a Brazilian mixed martial artist. He is the current UFC Middleweight Champion and the promotion's longest reigning champion. With 14 consecutive wins and 9 title defenses, Silva holds the longest winning streak and title defense streak in UFC history.

Silva is ranked as the number one Middleweight in the world by multiple publications, and is the consensus No. 1 pound-for-pound fighter in the world according to ESPN, Sherdog, Yahoo! Sports, MMAFighting.com and other publications. UFC president Dana White has proclaimed Silva as "the greatest mixed martial artist ever."^{[undue weight? – discuss]} Silva is also the last Cage Rage Middleweight Champion and a former Shooto Middleweight Champion. Besides the UFC and Cage Rage, Silva has fought for a number of other MMA promotions including the Pride Fighting Championships, Shooto and Rumble on the Rock.

Although known primarily for his mastery of Muay Thai striking, Silva is also a Brazilian Jiu-Jitsu blackbelt, a rank he earned in 2006 from Antônio Rodrigo Nogueira who follows Gracie Lineage through Carlson Gracie, like Murilo Bustamante and the Brazilian Top Team. He began martial arts training at the age of 14, training Tae kwon do and earning a black belt by the age of 18. He is also a black belt in Judo and a yellow rope in Capoeira.

Demian Maia Baptista (Portuguese pronunciation: [ˈdemiɐ̃ ˈmajɐ] born November 6, 1977) is a Brazilian mixed martial artist and Brazilian Jiu-Jitsu practitioner. He currently fights for the Ultimate Fighting Championship. Maia is currently ranked the #6 middleweight in the world by Sherdog and Yahoo! Sports., and the #8 middleweight fighter in the world by MMAWeekly.

Born in São Paulo, Brazil, Maia trained in Judo as a child. When he became a teenager, he also began studying Kung Fu and Karate. By age nineteen, Maia was introduced to Brazilian Jiu Jitsu by his cousin. After four years and seven months, Demian received his black belt under Fabio Gurgel. Demian Maia finished college and graduated with a degree in Journalism. He is currently a third degree black belt in Brazilian Jiu-Jitsu and has won several major tournaments under Team Brasa.

He won the 77–87 kg weight division at the 2007 ADCC Submission Wrestling World Championship, defeating Yushin Okami, Rafael Lovato, and Tarsis Humphres before armbarring Flavio Almeida in the finals. He also won the 2007 Super Challenge under 83 kg belt, defeating Vitelmo Kubis Bandeira by rear naked choke and Gustavo Machado by a judges decision before going on to defeat Fabio Negao by guillotine choke in the finals. On the heels of his ADCC championship in 2007, Maia released an instructional DVD series titled The Science of Jiu Jitsu I & II in collaboration with the World Martial Arts company.

Renzo Gracie (English pronunciation: /ˈhɛnzoʊ ˈɡræsiː/; born March 11, 1967) is a Gracie Barra Brazilian Jiu-Jitsu black belt under Carlos Gracie Jr. and a retired mixed martial arts fighter. He is member of the Gracie family of Brazil. He is the son of Robson Gracie, grandson of Carlos Gracie, nephew of Carlos Gracie, Jr. and grandnephew of Helio Gracie.

A world famous Jiu-Jitsu coach, Gracie has helped train a number of professional fighters such as: Matt Serra, Ricardo Almeida, Georges St. Pierre, Frank Edgar, Rolles Gracie, Chris Weidman, Kyra Gracie and Roy Nelson. His brothers Ralph Gracie and the late Ryan Gracie were also famous fighters.

Gracie has competed both in Brazilian Jiu-Jitsu and mixed martial arts events such as the PRIDE Fighting Championships, the International Fight League, RINGS, Martial Arts Reality Superfighting (MARS) and the World Combat Championship.

On February 10, 2007 Gracie won a match against former UFC light heavyweight champion Frank Shamrock for upstart MMA promotion EliteXC on its debut night Saturday February 10, 2007, on Showtime. Gracie was able to take Frank down fairly easily after being overmatched on his feet and was still able to dominate on the ground for most of the match before Shamrock was disqualified by referee Herb Dean due to landing numerous illegal knee strikes to the back of Gracie's head while both fighters were on the ground. Shamrock had already been given one warning earlier in the match for illegal strikes to the back of Gracie's head. After the match, Gracie had to be helped out of the ring and back to his dressing room by his team allegedly due to receiving a concussion from the strikes.
Renzo formerly coached a team, the New York Pitbulls, for the International Fight League.