The Undertaker is undefeated at  WrestleMania  with an 18–0 record. Calaway is an eight-time  world champion : a  four-time   WWF/E Champion  and  three-time   World Heavyweight Champion  as The Undertaker, and a  one-time   USWA Unified World Heavyweight Champion  as Master of Pain. The Undertaker is also a  one-time   WWF Hardcore