Joshua Harter (born February 4, 1982) is an American professional wrestler, better known by his ring name Chris Sabin. He is currently working for Total Nonstop Action Wrestling (TNA), where he teamed with Alex Shelley as The Motor City Machine Guns.

After being trained by Scott D'Amore, Sabin debuted in 2000 for Border City Wrestling, and quickly began competing for numerous other independent promotions. In 2003, Sabin joined TNA, and quickly won the TNA X Division Championship, which he later unified with the WWA International Cruiserweight Championship. In 2004, he also wrestled for Ring of Honor. In 2005, Sabin wrestled in the UK at International Showdown for The Wrestling Channel's first year anniversary at a sold out Coventry Skydome. Throughout the next few years, Sabin competed mainly in TNA's X Division, until forming the Motor City Machine Guns with Alex Shelley in mid-2007.

Throughout his career, Sabin has held numerous championships, and was the last WWA International Cruiserweight Champion. He has also held titles in Border City Wrestling and Maryland Championship Wrestling. In Pro Wrestling Zero1-Max, he held the ZERO-1 MAX International Lightweight Tag Team Championship, and in TNA he is a former four-time X Division Champion. In 2007, Sabin won the All Japan Pro Wrestling Junior League Tournament, and also won the TNA Super X Cup in 2003. He was a member of the winning team in the TNA X Cup Tournaments in 2004, and 2006.

Jeffrey Nero "Jeff" Hardy (born August 31, 1977) is an American professional wrestler, painter, poet, singer-songwriter and musician who is currently signed to Total Nonstop Action Wrestling (TNA). He is also known for his stint with the World Wrestling Federation/Entertainment (WWE).

Before gaining prominence in WWE, Hardy performed for the Organization of Modern Extreme Grappling Arts (OMEGA), a promotion he ran with his brother Matt. After being signed by WWE, the brothers worked as jobbers, before gaining notoriety in the tag team division, partly due to their participation in Tables, Ladders, and Chairs matches. With the addition of Lita, the team became known as Team Xtreme and continued to rise in popularity. As a tag team wrestler, Hardy is a six-time World Tag Team Champion and a one-time WCW Tag Team Champion. Noted for his seemingly fearless airborne moves, Hardy's offensive toolbox more resembles a stunt man's than a pro wrestler's.

Daniel Healy "Dan" Solwold, Jr. (born April 15, 1978) better known by his ring name Austin Aries, is an American professional wrestler, currently signed to Total Nonstop Action Wrestling (TNA), where he is the current and longest reigning X Division Champion. He is also known for performing in Ring of Honor, where he became the first and thus far only two-time ROH World Champion.

Solwold began training under Eddie Sharkey and Terry Fox in 2000 and debuted on November 11, 2000, facing "Sheriff" Johnny Emerald. He wrestled in the midwest for several years before his east coast wrestling career was jumpstarted after he progressed to the finals of the 2004 ECWA Super 8 Tournament, where he was defeated by Christopher Daniels.

From there, he joined Ring of Honor. Aries made his ROH main show debut at ROH: Reborn Stage 2 in Chicago Ridge, Illinois on April 24, 2004. Aries was unsuccessful, however, losing a four corner survival match also involving Jimmy Rave, Rocky Romero, and the winner, Nigel McGuinness. Aries was scheduled to return at the May 22 show, Generation Next, to compete in a one night series which would showcase young, upcoming ROH talent. Alex Shelley, however, hand-picked Aries, along with Roderick Strong and Jack Evans, as members of a new stable (also meant to promote young, upcoming ROH talent) who, instead of earning their spots, would simply take them. The group took the name Generation Next as their own.

Patrick Martin (born May 23, 1983), is an American professional wrestler, better known by the ring name Alex Shelley. He is best known for working for Total Nonstop Action Wrestling as one half of the The Motor City Machine Guns with Chris Sabin. He previously gained fame on the independent circuit, working most notably for Ring of Honor, as well as in Japan, for Pro Wrestling Zero1-Max. He is a former two–time world champion having won the wXw World Heavyweight Championship on two occasions. Aside from wrestling, he is the lead singer of a rock band called The High Crusade, which includes his friends and fellow wrestlers Chris Sabin and Petey Williams.

Martin initially trained under Bobo Brown, then trained with Breyer Wellington. He then joined the BCW Can-Am Wrestling School and began training under Scott D'Amore and Joe E. Legend. Martin debuted in 2002 as "Alex Shelley", a name he created by combining the forename of Alex, the protagonist of the 1962 novel A Clockwork Orange, with the surname of Pete Shelley, the lead singer of the 1970s punk rock band the Buzzcocks. Six months into his career, he was hospitalized with a shattered jaw when he slipped on a wet ring and hit the unpadded ring apron. Shelley had steel plates inserted into his jaw as a result. After eight months, Shelley joined Ian Rotten's IWA Mid-South promotion. He worked in the IWA for six months before joining the Philadelphia based Combat Zone Wrestling. Not long after that, he joined Ring of Honor.

Nuufolau Joel "Joe" Seanoa (born March 17, 1979) is an American professional wrestler, better known by his ring name, Samoa Joe. He is currently under contract with Total Nonstop Action Wrestling.

Before debuting in TNA in June 2005, Seanoa competed in the Ring of Honor (ROH) independent promotion, where he held the ROH World Championship for a record 21 months. Upon joining TNA, Seanoa embarked upon an 18 month-long undefeated streak, in which he never lost a match by pinfall or submission. That streak came to an end at the Genesis event in 2006, when he tapped out to Kurt Angle's ankle lock submission hold.

Throughout his career, Seanoa has won numerous championships, including the Ring of Honor World championship and the Pure championship. Within TNA, he is a former TNA World Heavyweight Champion, a four-time TNA X Division Champion, and a two-time TNA World Tag Team Champion. He has also won the 2005 Super X Cup Tournament, the 2008 King of the Mountain match (the only one to retain the world championship in the match), and the TNA Triple Crown.