King contributed the main lead guitar solo and outro part to Pantera's song "Goddamn Electric", which appeared on the 2000 album, "Reinventing the Steel". King's rig was set up in Pantera's bathroom backstage just after Ozzfest in Dallas, as the group still did not have their own dressing room, on top of not appearing on the festival bill. King has also made several guest appearances on Marilyn Manson's Rape of the World Tour, joining the band to play tracks such as "Little Horn", "1996" and "Irresponsible Hate Anthem". Many fans noticed elements of King's own style used on these occasions. On October 21, 2010, the final date of the Jägermeister Music Tour, King joined Megadeth on stage at the Gibson Amphitheater in Hollywood to perform "Rattlehead" which was the first time in 26 years that King had shared the stage with Megadeth (King had been a touring substitute for a few months in 1984).