Peter K. Sell, (born August 5, 1982) is an American mixed martial artist specializing in Brazilian Jiu Jitsu. He is a black belt under teacher and fellow mixed martial artist Matt Serra in East Meadow, New York, and has trained extensively under striking coach Ray Longo in Garden City, New York. A member of the Serra-Longo Fight Team, Sell formerly fought as a Welterweight in the UFC, but has been released from his UFC contract, according to his profile being removed from UFC.com, as of April 22, 2009. He holds notable wins over Phil Baroni and Josh Burkman.

Sell made his debut with the UFC at UFC 51, defeating Top contender Phil Baroni by guillotine choke submission in what was considered a major upset, considering he was a 5–1 underdog.

After a controversial Technical knockout stoppage in his first fight against The Ultimate Fighter veteran Nate Quarry, Sell was then seen as a middleweight contestant on The Ultimate Fighter: The Comeback, which premiered on August 17, 2006. He entered the competition alongside Matt Serra, who competed one weight class below Sell in the welterweight division. Sell defeated "Chainsaw" Charles McCarthy to move on the semi-finals of the competition, where he lost to the ultimate winner of the tournament Travis Lutter. Although Sell did not proceed the finals, he was featured on the undercard of the season finale where he lost to Scott Smith in a back and forth war that ended via sudden highlight reel knockout.

Gianpiero Villante (born August 18, 1985 in Wantagh, New York) is an American mixed martial artist currently fighting in the light heavyweight division of Strikeforce. Fighting out of Long Island, New York, he trains at Bellmore Kickboxing Academy under trainer Keith Trimble, as well as Long Island MMA. Prior to his fighting career, he projected as a linebacker prospect in the NFL.

Villante was born in Wantagh, New York. He graduated from General Douglas Macarthur High School Class of 2003. During his junior year, he placed 3rd in the New York State Wrestling Championships. He followed this up his senior year by winning the state championship. He was equally accomplished in football, in which he received the 2002 Thorpe Award winner as the top football player in Nassau County, also the Bill Piner Award as the top linebacker in Nassau County and was named to the High School Heisman All-Star team. He attended Hofstra University from 2003-2007 where he continued his highly successful football and wrestling careers .. Having been named a 2004 1st Team Defensive I-AA All-American by The Sports Network, he was regarded as a potential NFL quality linebacker, the New York Giants, New York Jets, Indianapolis Colts, & Philadelphia Eagles all expressed interest in Villante.

Nathan Parker Quarry (born March 19, 1972) is a retired American mixed martial arts fighter who is most notable for his appearance in The Ultimate Fighter, a reality show from the Ultimate Fighting Championship, as well as co-hosting the show MMA Uncensored Live.

Nate Quarry grew up as a member of the Jehovah's Witnesses, which he later characterized as a cult that controls its members 24 hours a day. Quarry grew up in a sheltered lifestyle and did not even participate in organized sports until age 24, when he first became exposed to mixed martial arts. After a period of self-discovery, Quarry rejected his Jehovah's Witness upbringing, which caused him to become alienated from his family and former friends. He began to associate with others outside of the church and along the way began to train in mixed martial arts fighting. Eventually, Quarry made his way to Team Quest, out of Gresham, Oregon, where he continued to train until mid-2007.

Quarry made his professional mixed martial arts debut in 2001, in a match against Drew McFedries, which he won with a TKO in the second round. After compiling a 5–1 record, Quarry was invited by the UFC to participate in The Ultimate Fighter, a reality television show and mixed martial arts competition featuring up-and-coming MMA talent living and training in seclusion with the UFC. On the show however, Quarry had to drop out of the competition when he suffered an ankle injury during practice, which would have required six weeks to heal. He was asked to stay on as an assistant coach. When he was no longer officially allowed to compete, he allowed Team Quest teammate, Chris Leben (who was already eliminated by Josh Koscheck) to take his place. During his time on the show, he was seen as the role model for Team Couture and would also stand up for Team Liddell member Sam Hoger when others would make fun of him, but confronted him when he was accused of stealing UFC merchandise from the gym.

Matthew John Serra (born June 2, 1974) is an American mixed martial artist and Brazilian Jiu-Jitsu black belt. He is a former UFC Welterweight Champion and an ADCC Submission Wrestling World Championship silver medalist. He began practicing martial arts at an early age, first studying kung fu. In the 1990s, he began studying Brazilian Jiu-Jitsu under Renzo Gracie and on May 23, 2000 he obtained his black belt, the first American to do so under Gracie. He is one of only two people in MMA to defeat Georges St-Pierre, the other being UFC Hall of Famer Matt Hughes.

Serra won first place at the Brazilian Jiu-Jitsu Pan American games in 1999 and won third place at the 1999 World Championships in Brazil as a brown belt. Continuing his Martial Arts career, he competed in the ADCC Submission Wrestling World Championship choking out Takanori Gomi, winning a decision over Jean-Jacques Machado, and placing 2nd in the 66–76 kg division. Serra was invited to compete in Pride 9 against Johil de Oliveira but the bout was called off at the last minute when Oliveira was burned in a pyrotechnics accident backstage. Soon after, Matt began to compete in the UFC organization where he built up a record of four wins and four losses. One of the losses was a close decision fight with future Welter and Lightweight champ B.J. Penn which would have earned him a title shot in the failed Lightweight tournament.

Chris Scott Lytle (born August 18, 1974) is a retired American mixed martial artist, boxer and a veteran of the Ultimate Fighting Championship. Lytle was prominently featured as a welterweight on The Ultimate Fighter 4: The Comeback. In Chris's MMA and boxing career he was never knocked out or submitted, though he did lose in MMA competition by TKO by way of cut stoppage. Chris won ten UFC fight bonuses, the most in UFC history, including six Fight of the Night Honors, three Submission of the Night Honors, and one Knockout Of The Night Honors.

Lytle was born in Indianapolis, Indiana and graduated from Southport High School in 1993. At Southport, he was an active member of the wrestling team. In fact, to this day, he still participates in workouts at the Southport High School with the wrestling team, Coach Petty and Coach Dildine. Lytle attended Indiana University where he achieved a degree in Sports Management.

Lytle started training for fighting in 1998, saying that it was "something to keep me active". He trains part-time outside of his regular job as a firefighter, attending single-discipline gyms rather than MMA camps. He has held championships in the Hook N' Shoot and Absolute Fighting Championship promotions and won the Cage Rage World Welterweight Championship. He became the 175 lb Indiana state boxing champion, saying, "By the end of the year (2004), I think I'll have a few more smaller boxing titles."