Infernal Attack was a black/thrash/speed metal band from Itabaiana, Brazil, featuring guitarist and vocalist Jhonata Hellfire and drummer Julio Hellbutcher. The band released the EP Eternal Desire in 2020 through Sacrifice Records of Portugal as a hand-numbered limited cassette edition of 70 copies. The release was described as "unholy black/thrash from Brazil" and represents the band's key recorded output before their split.

Inner Rotten was a trio from Temuco, Chile, playing a raw, noisy blend of speed metal and hardcore punk under the pseudonyms Peyo Sinister, Neil Weedminister, and Dirty Rorro. The band released several recordings including the albums Pissed Off Mind and Double Electric Discharge, and the 2012 six-track album Live Incorrectly. Fuck For Fun. Die Laughin', channeling the destructive energy of Black Sabbath and 1980s punk into a scrap-crusher sound.

Iron Bastard is a black/speed metal band from Itu, São Paulo, Brazil, playing in the tradition of classic European and Japanese underground metal. Their second full-length album, "Thunder Röaring Metal" (2024), released through Black Hearts Records, was cited among the top Brazilian metal releases of the year and includes covers of Holocaust and Sabbat alongside original material such as "Forged in Fire" and "Culto ao Abismo". The band has shared stages with international acts including Sabbat at the Brazilian Harmageddon festival in São Paulo.

Irreverencia is a speed/thrash metal band from Santiago, Chile, active since 1995, whose lyrics address atheism and political themes. Their 2001 album Dadme la otra mejilla stands as a key release in their catalogue, and the band has remained active through releases on Santiago's Bolchevique Records.