Ones") and invited Zumbido to join the group, but he suffered an injury before he could actually team up with Los Guapos. Upon his return to the ring he teamed up with Violencia, Doctor X, losing to Safari, Olímpico and La Fiera on the undercard of the CMLL Apocalypsis PPV. In 2003 Los Guapos created Guapos U, a "Reality Show" inspired storyline where young hopefuls competed to earn a spot in the Los Guapos group. During the storyline Zumbido developed a rivalry with fellow Guapo U member Ricky Marvin, a rivalry that got Zumbido kicked out of the group for fighting. Zumbido and Rivera met in a Lucha de Apuesta match where both wrestlers put their hair on the line. The match ended in a draw and as a result both wrestlers had their hair shaved off after the match. Once the storyline with Ricky Marvin ended Zumbido began teaming with Super Crazy, forming a regular tag team. The two teamed up with Alan Stone to participate in a tournament for the vacant Mexican National Trios Championship but lost in the finals to El Felino, Safari and Volador Jr. In early 2004 Zumbido turned on his partner, attacking him after a match to signal his transition to being a Rudo (bad guy). The feud between the two saw Zumbido defeat Super Crazy in a Lucha de Apuesta on April 30, 2004, after which he shaved the hair off Super Crazy's head. AAA (2005–2008) After leaving CMLL Zumbido began working for AAA in 2005, using his ring name since he owned the copyrights to the name. In AAA Zumbido teamed up with Shocker, Scorpio, Jr. and Mini-Estrella El Guapito to form Guapos VIP, a new incarnation of Los Guapos. Zumbido's first appearance at an AAA Pay-Per-View was at the 2005 Verano de Escandalo where he teamed with Hator and Nosawa only to lose to El Ángel, Antifaz del Norte and Estrella Dorada, Jr. On January 26, 2006 Zumbido won a tournament to become the next Mexican National Middleweight Champion. defeating Histeria in the finals. At the 2006 Rey de Reyes Guapos VIP represented by Shocker, Scorpio, Jr. and Zumbido, participated in the main event of the evening, a 12-man Elimination match for the Rey de Reyes trophy. Guapos VIP were the first team eliminated when Shocker was counted out. Not long after the Rey de Reyes event Guapos VIP added Alan