Lamounier sang briefly with Sepultura during the early part of the band's career, contributing the lyrics to the song "Antichrist" (a reference to his own moniker) featured on the band's first release Bestial Devastation.
Lamounier collaborated with Sepultura on the song "Antichrist," which is a lyrically significant piece referencing his own stage name, featured on their debut album Bestial Devastation.