Ricardo Alejandro Lamas (born May 21, 1982) is an American mixed martial artist who currently fights as a featherweight in the Ultimate Fighting Championship organization. He trains with Team Top Notch in Elmhurst, Illinois. Lamas currently holds a brown belt in Brazilian Jiu-Jitsu under 2007 World Nogi jiu jitsu champion Daniel Valverde.

Lamas' father is Cuban and his mother is Mexican. The flags of these two countries are often displayed on his clothing during his fights.

Lamas graduated with a degree in exercise science from Elmhurst College in 2005, where he was a member of the men's wrestling team and earned All-American honors at the NCAA Division III Men's Wrestling Championships at 157 lbs. During his collegiate wrestling career (2001–2005), he racked up over 100 wins. He was also a two-time CCIW Champion, and was named the CCIW's "Most Outstanding Wrestler" during the 2003-04 season. Lamas returned to Elmhurst after graduation to serve as the assistant men's wrestling coach.

On March 1, 2009, Lamas made his WEC debut at WEC 39 in Corpus Christi, Texas against IFL and WEC veteran Bart Palaszewski. Lamas took the fight with 4 days notice. Lamas controlled Palaszewski with superior wrestling and scored with excellent ground-and-pound to win a unanimous decision victory over the more experienced fighter. Lamas suffered his first loss against Danny Castillo at WEC 42 on August 9, 2009.

José Aldo (Portuguese pronunciation: [ʒoˈzɛ ˈawdu]; born September 9, 1986) is a Brazilian mixed martial artist, who competes as a featherweight in the Ultimate Fighting Championship where he is the first and current UFC Featherweight Champion. Aldo was also the fourth and final WEC Featherweight Champion. His only career loss has been to Luciano Azevedo.

Aldo is ranked as the #1 featherweight in the world by Sherdog and #4 in their pound for pound list. He was also named the 2009 Fighter of the Year.

Known by the nickname "Junior", José Aldo da Silva Oliveira Júnior fought his first professional MMA fight at the age of seventeen at EcoFight 1 on August 10, 2004. He fought fellow countryman and newcomer Mário Bigola, whom he defeated by knockout (head-kick) eighteen seconds into the first round. It would be Bigola's first and only professional fight.

Aldo fought fellow Brazilian Hudson Rocha, in his second fight for Shooto Brazil. The fight was ended by doctor stoppage at the end of the first round due to a cut over Rocha's left eye, which was caused by a flying knee thrown by Aldo followed by a barrage of punches. Rocha was able to get back to his feet only to be met with more strikes and a knee before Aldo kicked his legs out from under him.

Anthony Pettis (born January 27, 1987) is an American mixed martial artist who competes in the lightweight division and is currently signed with the Ultimate Fighting Championship. A professional MMA competitor since 2007, Pettis has made a name for himself mainly fighting in his home state of Wisconsin. He is a former fighter for the World Extreme Cagefighting (WEC), where he was the last WEC Lightweight Champion before merging the promotion into the UFC.

Born to Eugene Pettis Jr. and Annette Garcia, Anthony Pettis grew up in the south side of Milwaukee, Wisconsin along with his older brother Ray Pettis and younger brother Sergio "Lil' Showtime" Pettis. Pettis is of Mexican and Puerto Rican ancestry, his grandfather Anglicized the family name from Perez to Pettis, to avoid discrimination. Pettis attended Dominican High School.

Anthony "Showtime" Pettis made his professional MMA debut in December 2007. He compiled an undefeated record of 8-0 in shows all based in Milwaukee, Wisconsin before debuting with the WEC. Pettis also has a professional kickboxing background.

Frank James Edgar (born October 16, 1981) is an American mixed martial artist, who competes as a lightweight in the Ultimate Fighting Championship and is a former UFC Lightweight Champion. His first career loss came against Gray Maynard in 2008, which marked the beginning of a noted rivalry. He later avenged the loss to Maynard with a KO victory in 2011. As of March 2012, he is ranked as the #2 lightweight in the world by Sherdog.com.

Born and raised in Toms River, New Jersey, Frankie Edgar wrestled at Toms River High School East, making it to the New Jersey state championship tournament on three occasions, placing second as a junior and fifth as a senior. Edgar is the oldest of 3 children, Edgar went on to compete in the NHSCA Senior Nationals and placed second before he finished high school. He continued wrestling at Clarion University of Pennsylvania, where he qualified for the nationals all four years there. Edgar is also an assistant coach for the Rutgers University wrestling team.

Edgar entered his first mixed martial arts fight with only a few weeks of training outside of his wrestling background. Edgar originally trained with Rob Guarino of Rhino Fight Team, but today he is part of the Gracie system under Ricardo Almeida in Hamilton, NJ. Since seventh grade Edgar has wrestled with Steve Rivera at Elite Wrestling NJ in Jackson, NJ. His boxing trainer is Mark Henry of Millstone, NJ.