After the title, a sign read "Un concurso de locos habitado por..." ("A contest made by crazy people, inhabited by...") and then there were the credits. All the cast and crew were credited with nicknames as if they were neighbors in a crazy building. Each credit was inspired on the job they had on the show, including the contestant each episode, credited as "El osado concursante" (The Daring Contestant):
- Jordi Hurtado - El enterao (The know-it-all, he was the host of the show)
- Virginia Mataix - La chica de enfrente (The girl in front, she co-hosted the show)
- Juanjo Cardenal - El invisible (The invisible one, he was the voice that made questions to the contestant)
- Elena, Jair and Janine - Las vecinitas de arriba (The little neighbors from upstairs, they were the assistants to the host)
- Gonzalez y Gonzalez - Los forzudos del sotano (The strongmen from the basement, they lifted the contestant to the starting position and helped during the game)
- Damia Barbany - El inevitable del ascensor (The unavoidable one from the elevator, he was a comedian doing various characters)
- Rafael Blanch - El incansable vecino del piano (The tireless neighbor with the piano, he played background music during the show with his piano)
- Pere Pocurull - El bombillas (The light bulb man, he was in charge of lightning)
- Luis Gracia - El remiendos (Mr. Patchworks, he was the costumer)
- Isidro Prous - El apañao (The resourceful one, he was the producer)
- Sergio Gil and Sergi Schaaf - Los implacables caseros (The relentless landlords, they were the audiovisual producers and directors)