Jack Evans, Joe Líder and Nicho el Millonario, after which Cibernético threatened to light Parka on fire, before being driven out of the ring by Nicho. In May, La Parka formed his own group El Inframundo ("The Underworld") with Dark Ozz, Dark Cuervo, Dark Espíritu and the recently debuted Drago to counteract Los Bizarros. On May 13, La Parka challenged Cibernético to a battle of the groups at Triplemanía XIX, which he accepted. It was later revealed that for the event Parka's team would be joined by Octagón, looking for revenge for what happened to him nine months earlier. During the event, Octagón would also become the fifth inductee into the AAA Hall of Fame, following in the footsteps of Antonio Peña, Rey Mysterio Jr., Eddie Guerrero and Pepe Casas. In September 2010, Silver King and Último Gladiador, two thirds of the stable Los Maniacos, announced they were joining La Sociedad, and although their stablemate Electroshock made no official announcement on whether or not he would be following them, he agreed to represent the group at Héroes Inmortales IV in order to get his hands on longtime rival Heavy Metal, who would represent AAA in the steel cage match between the two groups. After the event, during which Heavy Metal suffered an injury, which would sideline him for four months, Electroshock officially announced that he was not part of La Sociedad and urged Silver King and Último Gladiador to leave the group. At the November 18 event in Naucalpan he once again turned down an offer to join La Sociedad and was as a result beaten down by Silver King, Último Gladiador and La Milicia, turning him técnico in the process. When Heavy Metal returned from his injury on February 4, 2011, he and Electroshock entered a Best of Five series, with the loser having his hair shaved off. During the series, King and Gladiador tried to recruit Heavy Metal as the newest member of Los Maniacos and even interfered in several of the matches, but Heavy Metal made clear that he did not want to join them. The fifth match, a best two-out-of-three falls Bull Terrier match, took place on March 18 at Rey de Reyes, where Heavy Metal was victorious after a guitar shot, forcing Electroshock to have his hair shaved off. After the match both Electroshock and Heavy Metal were attacked by members of La Sociedad, bringing