The members are Javier (Xavier) Garza Alarcón, Jorge García Castil, and Rafael Acosta.
[1] Although Mister Loco was formed in 1975, individually the six members studied Latin American folk and modern music for fifteen years.
Mister Loco was formed with a somewhat adventurous and original idea: to combine traditional Latin rhythms and instruments with popular music.
In 1975, they won the World Popular Song Festival at the Nippon Budokan in Tokyo.
In 2006, the band featured on the soundtrack for director Jared Hess's film Nacho Libre.