Peter Alan Gruner Jr.[4](born May 11, 1974)[1] is an American retired professional wrestler, better known by his ring name Billy Kidman.

[2] As a member of these stables, Kidman participated in memorable feuds with top WCW names, including Hulk Hogan, Jeff Jarrett, and Rey Mysterio[2] Kidman also found championship success while in WCW, where he became a three time Cruiserweight Champion,[5][6][7] a two time World Tag Team Champion,[8] once with Mysterio Jr. and once with Konnan, and in the Cruiserweight Tag Team Champion final with Mysterio Jr.[8] Upon WCW's purchase by the World Wrestling Federation, Kidman became a member of the WCW/ECW Alliance.

He made his televised debut in WCW on the May 18 episode of Saturday Night, competing against Diamond Dallas Page in a losing effort.

[18] Kidman received his first title opportunity in WCW, unsuccessfully challenging Rey Misterio Jr. for the World Cruiserweight Championship on the September 9 episode of Monday Nitro.

[19] On the September 30 episode of Nitro, Kidman filled in for Psychosis, who could not show up due to his visa issues and competed as the masked "El Technico" by teaming with Juventud Guerrera against The Public Enemy in a losing effort.

[24] Kidman found little personal success with the group and competed in major matches only on a few occasions, such as participating in a battle royal to determine the #1 contender for the Cruiserweight Championship in his pay-per-view debut at Slamboree.

[26] At Fall Brawl, Kidman aided Perry Saturn in defeating Flock's leader Raven in a match, thus disbanding the group.

[27] Following the Flock's disbanding, Kidman shed his grungy attire and heroin gimmick and began performing as a clean-cut fan favorite before eventually defeating Juventud Guerrera to win his first Cruiserweight Championship on the September 14 episode of Nitro.

Kidman lost the title back to Guerrera on the November 16 episode of Nitro but regained it in a rematch at World War 3 in Auburn Hills, Michigan.

The two, however, faced Chris Benoit and Dean Malenko for the titles on the March 29 episode of Nitro, and succeeded with unwanted aid from Raven and Saturn.

At Souled Out, Kidman participated in the Triple Threat Theater, a series of three matches with different stipulations, initially scheduled between Chris Benoit and Jeff Jarrett.

[32] At Spring Stampede, Kidman participated in a tournament for the vacant United States Heavyweight Championship, losing to Vampiro in the quarter-final round.

Reflecting the gimmick of the New Blood, Kidman began acting as hotshot who refused to be held back by wrestlers beyond their prime.

The New Blood would then split up, leading Kidman to turn face as he entered a feud with Shane Douglas for the affection of his on-screen girlfriend Torrie Wilson.

At Halloween Havoc, Kidman and Mysterio failed to win the World Tag Team Championship from Mark Jindrak and Sean O'Haire in a triangle match, also involving The Boogie Knights.

In the spring of 2001, Kidman and Mysterio entered the Cruiserweight Tag Team Championship tournament, defeating Jason Lee and Johnny Swinger in the quarterfinals and 3 Count in the semifinals but lost in the finals to Elix Skipper and Kid Romeo at Greed.

When The Invasion commenced, Gruner appeared on WWF television under his Billy Kidman ring name as a tweener for The Alliance.

Kidman debuted in WWF on the July 5 episode of SmackDown!, competing in the first televised WCW match on the weekly program.

Kidman's return match took place on the March 30 episode of Jakked, where he teamed with The Hurricane against Funaki and Tajiri in a losing effort.

At Rebellion, Kidman and his real-life girlfriend Torrie Wilson defeated John Cena and Dawn Marie in an intergender tag team match.

Following the title loss, Kidman proceeded to spend the next few years as a cornerstone of the cruiserweight division before forming a tag team with newcomer Paul London in early 2004.

The heel turn played off of a legitimate injury which occurred on the August 26, 2004 episode of SmackDown!, when Kidman's shooting star press unintentionally caused Chavo Guerrero to suffer a concussion.

[38][39] The next week, Kidman was on the top rope ready to hit the shooting star press, but hesitated, climbed down the turnbuckles, and slowly walked backstage overwhelmed with guilt after injuring Guerrero.

[43][44] Gruner stated that the release was due to an argument with management over their decision to stop booking wrestlers on first class flights overseas.

In 2007, Kidman made his International Wrestling Association debut in a match for the IWA World Heavyweight Championship against Ray González, which he lost.

Kidman returned to WWE in 2007, helping train upcoming wrestlers in its then developmental territory Florida Championship Wrestling throughout 2007 and 2008.

[48] On August 23, 2016 episode of SmackDown Live, he appeared along with Jamie Noble to prevent Dolph Ziggler from attacking AJ Styles.