After losing to Undertaker, Shamrock, Big Show, Mankind and Test formed The Union, a stable of wrestlers in opposition to the Corporate Ministry. The Union dissolved soon after defeating the Corporate Ministry at Over the Edge in May. Shamrock briefly feuded with Jeff Jarrett before beginning a rivalry with martial artist Steve Blackman that saw he and Blackman fight one another in a series of unorthodox matches. The feud ended at SummerSlam, where Shamrock defeated Blackman in a "Lion's Den weapons match". He went on to feud with the newly debuted Chris Jericho until departing the WWF in late 1999 in order to resume his mixed martial arts career. His departure was attributed on screen to an injury inflicted by Jericho's bodyguard, Mr. Hughes. Shamrock has since appeared in the video games WWF SmackDown!, WWF SmackDown! 2: Know Your Role (in Royal Rumble matches only), WWF WrestleMania 2000, WWF No Mercy, WWE '13 and WWE 2K16.
