Who is undertaker?

Undertakers real name is Mark William Calaway. He is a professional wrestler better known by his ring name The Undertaker in WWE.

The Undertaker is undefeated at WrestleMania with a 17-0 record and is a six time world champion (four time WWE Champion and two time World Heavyweight Champion). He was also the winner of the 2007 Royal Rumble in which he became the first man to win the Rumble at number 30.