As Picudo, Hernández was a member of Los Vatos Locos, a Kiss look-alike group of wrestlers, with whom he held the Mexican National Atómicos Championship.

As both Picudo and Devil Rocker, Hernández wore wrestling gear reminiscent of the elaborate stage costumes of the rock group Kiss.

In mid-1998 AAA owner Antonio Peña put together a new group of wrestlers, a stable called Los Vatos Locos (Spanish for "the crazy guys") consisting of Nygma, Charly Manson, May Flowers and Picudo.

After joining Los Vatos Locos Nygma changed his appearance slightly, adopting an outfit and a face paint/mask combo inspired by Kiss lead guitarist Ace Frehley's "Spaceman" look.

[1] The Verano de Escandalo match was just the first encounter in a long storyline feud between the two groups that would last for several years.

The Vatos Locos / Los Vipers feud continued through 1999 with the two teams wrestling to a double disqualification at Triplemanía VII in June.

In keeping with the "Kiss" theme set by Nygma and Picudo, Espiritu altered his appearance to look more like Paul Stanley's "Starchild" character.