Mark William Calaway (born March 24, 1965) is an American professional wrestler better known by his ring name The Undertaker. He is signed to WWE and is the company's most tenured competitor. Calaway began his wrestling career with World Class Championship Wrestling (WCCW) in 1984. He joined World Championship Wrestling (WCW) as "Mean" Mark Callous in 1989. When WCW did not renew Calaway's contract in 1990, he signed with the World Wrestling Federation in October and, after shortening his name from Kane the Undertaker to simply The Undertaker, has remained with the company since.

The Undertaker has two contrasting personas. The first is the role of The Deadman, an undead, occult-like figure, which has consisted of many different styles. He debuted his original Deadman persona during his own on-camera debut at Survivor Series (1990). At this event, the Undertaker was clad as a Western mortician. Next, in October of 1998, the Undertaker appeared as the leader of the Ministry of Darkness (with similar apparel). Since WrestleMania XX, the Undertaker has appeared as a hybrid version of the Deadman character, using elements of the previous Deadman incarnations.

Michael Shawn Hickenbottom (born July 22, 1965), better known by his ring name Shawn Michaels, is a retired professional wrestler, and an American television host. He is currently signed to WWE, where he has served as an ambassador for the company since December 2010. Hickenbottom consistently wrestled for WWE, formerly the World Wrestling Federation (WWF), from 1988 until his first retirement in 1998, due to injury. He appeared in non-wrestling roles from 1998 to 2000, and resumed his in-ring career in 2002, retiring in 2010. He also hosts the show MacMillan River Adventures, airing on the Outdoor Channel.

Hickenbottom began his wrestling career with Mid-South Wrestling, now known as Universal Wrestling Federation, and American Wrestling Association (AWA). During his time with AWA, he performed in partnership with Marty Jannetty, as The Midnight Rockers; winning the AWA World Tag Team Championship twice. Hickenbottom and Jannetty briefly signed with World Wrestling Federation (WWF) in 1987, while in contract with AWA. They returned to AWA, only to go back to the WWF in 1988.

Eduardo Gory "Eddie" Guerrero Llanes (October 9, 1967 – November 13, 2005) was a Mexican-American professional wrestler born into the Guerrero wrestling family. He wrestled in Mexico and Japan for several major professional wrestling promotions. In the United States, Guerrero wrestled in Extreme Championship Wrestling (ECW), World Championship Wrestling (WCW), and in World Wrestling Entertainment (WWE). Guerrero's gimmick was that of "Latino Heat", a crafty, resourceful wrestler who would do anything to win a match. His catchphrase became "I Lie! I Cheat! I Steal!," which was used in one of his entrance themes. Guerrero partly used this phrase in his autobiography Cheating Death, Stealing Life.

Despite being a villain for most of his career, he got over in and outside the ring being the youngest, yet most popular and successful of the Guerrero brothers. Guerrero was widely regarded as one of the most respected and gifted technical wrestlers in history. Throughout his career, Guerrero encountered various substance abuse problems outside of wrestling, including alcoholism and an addiction to painkillers. His real-life problems were sometimes integrated into his storylines. Notwithstanding these issues, Guerrero won 23 titles during his career, including the WWE Grand Slam Championship.