Born on March 24, 1965, Mark William Calaway, renowned by his ring alias The Undertaker, is a retired American professional wrestler. Acknowledged as one of the greatest in the sport, he predominantly competed in the WWF/E, gaining widespread acclaim for his iconic "Deadman" Undertaker persona. In 2022, he earned induction into the WWE Hall of Fame.

Calaway commenced his wrestling journey in 1987, adopting various personas in World Class Championship Wrestling (WCCW) and affiliated promotions. After a brief stint with World Championship Wrestling (WCW) in 1989, he joined the World Wrestling Federation (WWF, later WWE) in 1990.

Upon entering the WWF, Calaway underwent a transformation into "The Undertaker." As one of WWE's enduring and high-profile characters, The Undertaker became known for his undead, funereal, and macabre "Deadman" persona. This persona garnered mainstream popularity, earning him the Wrestling Observer Newsletter's Best Gimmick award for a record-setting five consecutive years. With a tenure of 30 years, he holds the record as the longest-serving wrestler in the company's history. In 2000, Calaway expanded the Undertaker character, introducing a human side and a biker identity known as "The American Badass." In 2004, he resurrected the Deadman Undertaker persona, incorporating residual elements of the American Badass.

Throughout his career, The Undertaker was a focal point of WWE's flagship annual event, WrestleMania, establishing a legendary Streak of 21 consecutive victories. He also formed notable alliances and rivalries, particularly with his in-storyline half-brother Kane, as part of the Brothers of Destruction from 1997 to 2020. Under the Undertaker persona, Calaway secured four WWF/E Championships, three World Heavyweight Championships, one Hardcore Championship, and six World Tag Team Championships. Additionally, he emerged victorious in the Royal Rumble match in 2007.