Oath of Persistence work in the space where death and thrash collide, building their catalog around Lovecraftian and dystopian themes that run through releases including the demo Deadly Tentacles of Summoning, the album The Myths, and the 2023 EP Arrival. The three-track Arrival tightens their attack into focused bursts, with tracks like "Fear of the Unknown" and "Queen of the Swarm" showcasing the band's appetite for cosmic dread wrapped in grinding riff work.

Death/thrash metal five-piece from Santiago, Chile, formed in 2025. They released their self-titled debut on January 10, 2025, a three-track record featuring songs including "Dying Hounds" and "Terror."

One of the early extreme metal acts out of São José dos Campos, Obsessos played caustic death/thrash driven by Satanic and occult imagery in the spirit of the mid-1980s South American underground. Their 1987 demo 666: The Ultimate — featuring tracks like "Scream of Priests" and "Satan's Procreation" — stands as a raw document of the era before the band dissolved in 1988.

Thrash metal band from the Aconcagua valley in Chile's fifth region, drawing on Bay Area influences including Testament and Megadeth. They released two albums in 2019 — Reino de Esclavos and Deseos de Aniquilación — with the latter receiving physical distribution across South America and Asia through the Nocturnal Silence label.

Ojos Negros is a thrash metal band from San Justo, Buenos Aires, active since 1993 and one of the longer-running acts in their local scene. The band released the album Lágrimas de Odio in 1997 and is signed to the Nacido Muerto label. Their lineup includes vocalist Eduardo Tarascio alongside guitarist Claudio Ferrara and drummer Christian Ferrara.

Thrash metal band from Santiago, Chile, rooted in the Bay Area sound of the late 1980s. They released the Advance LP in January 2019 on Misfortune Records as a limited cassette edition of 100 copies.

One of Them is a Porto Alegre thrash metal outfit whose 2019 album Blind Faith, recorded at Hurricane Studio with producer Sebastian Carsin, brought together vocalist GG Mussi, guitarists Jeff Witt and Ivan Santos, bassist Alexandre Guterres, and drummer Jonas Koehler. The record marked a new phase for the band, arriving roughly a decade after their debut EP I Am One of Them and featuring a Portuguese-language track for the first time.

Operador channel the frustrations of the Brazilian call-center grind into punishing thrash and heavy metal, with lyrics drawn directly from the monotony and dehumanization of telemarketing work. Their 2022 demo "Conexão Call Center" laid out the concept in eight tracks, and the re-recorded version released in 2023 sharpened the riffs while keeping the satirical edge intact.

Oppressus is a thrash metal band from Neiva, Huila, Colombia, formed in 2011. Their debut full-length "Humanidad in Vitro" was released in 2017, with lyrics addressing social and political nonconformity, war, death, and destruction. The band remains active as an independent act on the Colombian underground metal scene.