Kane then formed a tag team with Mankind, with whom he won the WWF Tag Team Championship twice. After losing the titles and turning on Mankind, Kane allied with The Undertaker, with the duo being known as The Brothers of Destruction. At , Kane, The Undertaker, and Stone Cold Steve Austin competed in a triple threat match for Austin's WWF Championship; Kane and Undertaker were prohibited from pinning each other, so they pinned Austin at the same time. The half-brothers fought one another for the vacant WWF Championship at , with the match ending in a no contest when special guest referee Austin counted a double pinfall and declared himself the winner; during the match, The Undertaker betrayed Kane for Paul Bearer. At , Kane interfered in the Buried Alive match between Austin and The Undertaker, attacking Undertaker and costing him the match. As a result, The Corporation had Kane committed to an insane asylum. In December, Kane joined The Corporation to stay out of the insane asylum. He was later betrayed by The Corporation and thrown out of the alliance.