Peter Alan Gruner, Jr. is an American professional wrestler and wrestling producer, better known by his ring name Billy Kidman. He is currently signed to WWE, where works as a producer. As a wrestler, Kidman is best known for his work with World Championship Wrestling (WCW) and WWE throughout the late 1990s and early 2000s. While in WCW, Kidman gained fame as a key member of several stables. In addition to being a member of Raven's Flock, he also was a member of the Filthy Animals and later The New Blood. As a member of these stables, Kidman participated in memorable feuds with top WCW names, including Hulk Hogan, Jeff Jarrett, and Rey Mysterio, Jr.. Kidman also found championship success while in WCW, where he became a three time Cruiserweight Champion, a two time World Tag Team Champion (once with Mysterio, Jr. and once with Konnan) and a one time (and the final) Cruiserweight Tag Team Champion with Mysterio, Jr. Upon WCW's purchase by the World Wrestling Federation, Kidman became a member of the WCW/ECW Alliance. During his time in the WWF (later renamed to World Wrestling Entertainment), Kidman once again found success upon winning the Cruiserweight Championship an additional four times while the title was under the WCW banner and later the WWF/E banner, in addition to winning WWE's Tag Team Championship once with Paul London.

Filmography