The Undertaker began his wrestling career in 1987 with the World Class Championship Wrestling (WCCW), where he won the WCWA Texas Heavyweight Championship with the character of The Punisher; in 1988 he moved to the Continental Wrestling Association (CWA), later known as the United States Wrestling Association (USWA), where he fought using several gimmicks and won the USWA Unified World Heavyweight Championship under the name of The Master of Pain.
After fighting for the World Championship Wrestling (WCW) as "Mean" Mark Callous from 1989 to 1990, he signed up for the then World Wrestling Federation (WWF) in 1990. Undertaker's gimmick is that of a macabre undertaker who terrifies opponents through intimidating tactics and connections with the supernatural.
According to the kayfabe, he is Kane's half-brother, with whom he had two long feuds but with whom he also collaborated in the tag team known as The Brothers of Destruction. Speaking with ComicBook.com, Taker revealed his Mount Rushmore of wrestling.
The Undertaker: 'This is my Mount Rushmore'
“You got to have [Ric] Flair. You got to have [Hulk] Hogan. Stone Cold [Steve Austin]…. That fourth one’s tough. It could be Harley [Race]. It could be Dusty [Rhodes].
It could be Bruno [Sammartino]. And I base that on contributions to the business. Not so much if they were a great worker or this or that, but… Oh, I know my fourth, it’s Andre [The Giant]. I don’t know why I forgot Andre.
So yeah, it would probably be Flair, Hogan, Stone Cold and Andre. This is my Mount Rushmore of wrestling," The Undertaker said. He also discussed if a match with Sting was ever seriously considered: “Not to my knowledge.
I know the temperature got turned up on that I don’t remember which Mania it was, but Sting and I were on the same flight after a Mania. It was well after 27, but anyway we were standing in line together talking and someone obviously in this day and age, everybody has a camera and someone snapped a picture as we were just having a casual conversation.
… No one ever approached me with any serious like, “Hey, what do you think about Sting at this?” or it’s never been presented to me other than by our fans”. Undertaker's character has been praised as one of the best in professional wrestling.
He received the Wrestling Observer Newsletter's Best Gimmick award from 1990 to 1994. Tim Friorvant of ESPN named The Undertaker "a character that has been a cornerstone of the WWE for more than three decades"
Shawn Valentino of Pro Wrestling Torch said "The Undertaker may have been the greatest character in the history of professional wrestling."