Wrestling is a form of combat sport involving grappling type techniques such as clinch fighting, throws and takedowns, joint locks, pins and other grappling holds. A wrestling bout is a physical competition, between two (occasionally more) competitors or sparring partners, who attempt to gain and maintain a superior position. There are a wide range of styles with varying rules with both traditional historic and modern styles. Wrestling techniques have been incorporated into other martial arts as well as military hand-to-hand combat systems.

The term wrestling is attested in late Old English, as wræstlunge (glossing palestram).

Wrestling is one of the oldest forms of combat with references to it as early as the Iliad, in which Homer recounts the Trojan War in the 13th or 12th century BC. The origins of wrestling can be traced back 15,000 years through cave drawings in France. Babylonian and Egyptian relief's show wrestlers using most of the holds known to the present-day sport. In ancient Greece, wrestling occupied a prominent place in legend and literature; wrestling competition, brutal in many aspects, was the number one sport of the Olympic Games. The ancient Romans borrowed heavily from Greek wrestling, but eliminated much of its brutality.

Mark Jerrold Henry (born June 12, 1971) is an American powerlifter, Olympic weightlifter, strongman, and a professional wrestler with WWE, where he performs on its SmackDown brand. He is a 1992 Olympian, and winner of the 2002 Arnold Strongman Classic. Since joining the World Wrestling Federation (now WWE) in 1996, he has become a one-time WWF European Champion and a two-time world champion, having held the ECW Championship in 2008, and the World Heavyweight Championship in 2011.

Henry was a weightlifter, and competed at the 1992 Summer Olympics in Barcelona, Spain, where he placed tenth in the super heavyweight division. Three years later, at the 1995 Pan American Games, Henry won a silver medal in the super heavyweight division. The following year, he became a North America, Central America, Caribbean Islands (NACACI) champion. In 1996, Henry signed a ten-year contract with the WWF. Henry was trained by former Canadian professional wrestlers Stu and Bret Hart and Leo Burke. He made his television wrestling debut in September 1996. In January 1998, Henry joined the stable Nation of Domination. After the disbanding of the group, he acquired the moniker "Sexual Chocolate", which led him to participate in controversial angles.

Vincent Kennedy "Vince" McMahon (born August 24, 1945) is an American professional wrestling promoter, announcer, commentator, film producer, actor and former occasional professional wrestler. McMahon is the Chairman, CEO and Chairman of the Executive Committee of professional wrestling promotion WWE. Upon acquiring World Championship Wrestling (WCW) and Extreme Championship Wrestling (ECW), McMahon's WWE became the sole remaining major American professional wrestling promotion (until the national expansion of Total Nonstop Action Wrestling and Ring of Honor).

As an on-camera character, he can appear on all WWE brands (though the majority of the time, he appears on Raw). McMahon plays a character known by the ring name Mr. McMahon, based on his real life persona. In the world of WWE, he is a two-time world champion, having won the WWF Championship and ECW World Championship. He was also the winner of the 1999 Royal Rumble.

Vince is the husband of Linda McMahon, with whom he ran WWE from its establishment in 1980 until she resigned as the CEO in September 2009.

Steve Austin (born Steven James Anderson, later Steven James Williams; December 18, 1964), better known by his ring name "Stone Cold" Steve Austin, is an American film and television actor, producer, and retired professional wrestler. Austin wrestled for several well-known wrestling promotions such as World Championship Wrestling (WCW), Extreme Championship Wrestling (ECW) and most famously, the World Wrestling Federation (WWF). Described by WWE (formerly the WWF) chairman Vince McMahon as the most profitable wrestler in the company's history, he gained significant mainstream popularity in the WWF during the mid-to-late 1990s as "Stone Cold" Steve Austin, a disrespectful, beer-drinking antihero who routinely defied McMahon, his boss. This defiance was often shown by Austin flipping off McMahon and incapacitating him with the Stone Cold Stunner, his finishing move. McMahon inducted Austin into the WWE Hall of Fame in 2009.

Austin held twenty championships throughout his professional wrestling career, and is a six-time WWF Champion as well as the fifth Triple Crown Champion. He was also the winner of the 1996 King of the Ring tournament, as well as the 1997, 1998 and 2001 Royal Rumbles. He was forced to retire from in ring competition in early 2003 due to a series of knee and neck injuries sustained throughout his career. Throughout the rest of 2003 and 2004, he was featured as the Co-General Manager and "Sheriff" of Raw. Since 2005, he has continued to make occasional appearances. In 2011, Steve Austin returned to WWE to host the reality series Tough Enough.

Thomas James "Tom" Laughlin (born February 14, 1971) is an American professional wrestler better known by his ring name Tommy Dreamer. He is currently working for various promotions on the independent circuit. He is best known for his time spent with Extreme Championship Wrestling (ECW) and World Wrestling Entertainment (WWE). After leaving WWE after a nine year stint in 2010, Dreamer worked a year for Total Nonstop Action Wrestling (TNA). Among other accolades, he is a fourteen-time WWF/E Hardcore Champion and a two-time world champion, having won the ECW World Championship twice, and is the only man to have won this title in both the original company and in the WWE relaunch.

In addition to his most recent role, Dreamer is known for the time he spent in the Philadelphia-based Extreme Championship Wrestling (ECW) promotion, of which he has been called the "heart and soul". Though he only held the ECW World Heavyweight Championship once in his time with the company – for a total of about 30 minutes – he was regularly embroiled in the company's most visible angles on-screen and involved in the booking, some of the business decisions, and, like a number of other ECW wrestlers, was part of the day-to-day operations of the company off-screen. He is known as the "Innovator of violence."