Leprosy is a thrash/death metal band from Goiânia, Goiás, Brazil, originally formed in 1989 and revived by its original lineup in 2019 after a 24-year hiatus. Taking influence from bands like Death and Protector, the group recorded new material during the pandemic and released the full-length "Death to This World" in November 2021. The album features tracks such as "Schizophrenia" and "Infernal Massacre" and received positive reception for its dark, aggressive atmosphere.

Lethal is a thrash/heavy metal band from Florida, Buenos Aires, founded in 1988 by former members of Legión, that quickly became one of Argentina's most recognized metal acts, opening for international headliners including Sepultura, Pantera, and Anthrax. Their debut album "Bienvenidos a mi reino" (1990) featured the track "King of the Ring," voted best Argentine song of the year by readers of Madhouse magazine, and they followed it with notable releases "Maza" (1994) and "Efecto tequila" (1996). After a hiatus, the band reformed and has continued releasing music, including "Inyección Lethal" (2010) and "Somos thrash" (2023).