Heidenreich on his Undertaker WWE Feud Former WWE tag team champion with The Legion of Doom John Heidenreich talks about his extensive WWE feud .brPaul Heyman is left to deal with The Undertaker when a scared John Heidenreich escapes through the WWE Universe.brThe Undertaker and Jon Heidenreich look to settle their differences in a Casket Match. See FULL Classic WWE Moments!: Dont forget to .brbrroyal rumble.