Mark William Calaway, better known by his ring name The Undertaker, is an American retired professional wrestler currently signed to World Wrestling Entertainment (WWE) under a legends contract. One of the most recognizable figures in professional wrestling history, his 30-year tenure with WWE—formerly the World Wrestling Federation (WWF)—is the longest uninterrupted run of any wrestler in the company’s history. Upon his retirement in 2020, he became the last active performer to have appeared on the inaugural episode of WWF Monday Night Raw in 1993.

Calaway began his wrestling career in 1984 with World Class Championship Wrestling (WCCW) before moving to World Championship Wrestling (WCW) in 1989 under the name “Mean” Mark Callous. After WCW declined to renew his contract in 1990, he signed with the WWF.

He made his televised debut at the 1990 Survivor Series, originally introduced as Kane the Undertaker, before shortening the name to simply The Undertaker. At the event, he aligned with Ted DiBiase as part of DiBiase’s Survivor Series elimination team. Shortly thereafter, he was paired with manager Paul Bearer, a partnership that helped elevate him to the WWF Championship within a year of his debut.

In 1998, The Undertaker faced Mankind in a Hell in a Cell match at King of the Ring, a bout that became one of the most infamous matches in wrestling history. The match is best remembered for Undertaker throwing Mankind off the top of the cell and later chokeslamming him through the roof, moments that redefined the limits of spectacle and physical risk in professional wrestling and cemented both men’s reputations for toughness while permanently elevating Hell in a Cell as a signature stipulation.

Over the course of his WWE career, The Undertaker amassed numerous championships and accolades, most famously a 21-match undefeated streak at WrestleMania, the company’s flagship annual event. His final match took place at WrestleMania 36 in 2020, where he defeated AJ Styles in the cinematic Boneyard Match, bringing his in-ring career to a definitive close.

Revered by fans and fellow wrestlers alike, his longevity, character work, and consistency at the highest level cemented his legacy as one of the most celebrated figures in professional wrestling history and a near-universal choice among the greatest of all time.