 In addition Passion Kristal defeated Fantasma de la Opera in a "Lucha de Apuestas", hair vs. hair match, forcing Fantasma de la Opera to have all his hair shaved off after the loss.Starting as far back as at least 2002, the Mexican wrestling promotion International Wrestling Revolution Group (IWRG; Sometimes referred to as "Grupo Internacional Revolución" in Spanish) has held several annual events where the main event was a multi-man steel cage match where the last wrestler left in the cage would be forced to either remove their wrestling mask or have their hair shaved off under "Lucha de Apuestas", or "bet match", rules.From 2005 IWRG has promoted a fall show, around the Mexican Day of the Death, under the name "El Castillo del Terror" ("The Tower of Terror"), to distinguish it from other Steel cage matches held throughout the year such as the "IWRG Guerra del Golfo" ("Gulf War"), "IWRG Guerra de Sexos" ("War of the Sexes"), or "IWRG Prisión Fatal" ("Deadly Prison") shows.