The Brothers of Destruction began a feud with KroniK (Brian Adams and Bryan Clark), who were brought to WWF by Stevie Richards. Richards wanted revenge on the Undertaker for what happened to him on the April 26, 2001 episode of "SmackDown!", when Undertaker faced Richards' Right to Censor stable in a 4-on-1 handicap match, causing the stable to disband. On the September 17 episode of "Raw is War", Kane and Undertaker lost the WWF Tag Team Championship to The Dudley Boyz after KroniK interfered. At Unforgiven, they successfully defended their WCW tag titles against KroniK, before losing them to Booker T and Test on the following episode of "SmackDown!". They continued on as a team representing the WWF side through to the end of the Alliance Invasion angle, including their participation at Invasion and Survivor Series, after which The Undertaker immediately turned heel once more and the two did not interact with each other for a long while. The Undertaker become face before SummerSlam 2002 feuded with Test.