Alcoholic Rites are a thrash metal band from San Vicente de Tagua Tagua, in Chile's O'Higgins region, who have been active since the early 2010s. Their discography includes the albums Alkomanifesto (2010) and Fermented in Hell (2013), along with the 2016 split Drunk and in Charge with Lustrum on the Eternal Death label, and Rope of the Spirits (2022). The band's self-described "Alcoholic Dirty Heavy Thrash Metal of War" sound is rooted in old-school thrash with lyrics written entirely in Spanish.

Alcoholic Rites are a thrash metal band from San Vicente de Tagua Tagua, in Chile's O'Higgins region, who have been active since the early 2010s. Their discography includes the albums Alkomanifesto (2010) and Fermented in Hell (2013), along with the 2016 split Drunk and in Charge with Lustrum on the Eternal Death label, and Rope of the Spirits (2022). The band's self-described "Alcoholic Dirty Heavy Thrash Metal of War" sound is rooted in old-school thrash with lyrics written entirely in Spanish.

Alcoholic Vortex is a thrash metal band from Brasília that has distinguished itself with a sci-fi concept running across their releases: their albums follow Warren Jackson, a headbanger abducted and drawn into an intergalactic war, forming a serialized thrash opera. The band's "Space Traumas" series — Part I: "The Alcoholic Menace" and Part II: "Attack of the Yarells" — delivered fast, aggressive riffing with high-energy solos and earned praise in both Brazilian and international metal media.

Alcoholocausto is a thrash metal band from Recife, Pernambuco, formed in 2019 and operating under the "Brigada Anti Posers" banner, signaling an old-school, anti-trend ethos rooted in the Brazilian thrash tradition. Their sound embraces satanic and war-themed thrash in the vein of the classic Recife underground, releasing material independently and building a local following in the northeastern Brazilian metal scene.

Alcoólica was a thrash metal band from Santos, São Paulo, formed in 2013 and part of the port city's underground metal scene alongside acts like Chemical Disaster. The band released sessions through their Bandcamp page before eventually splitting up, representing Santos's contribution to the broader São Paulo state thrash underground.

Alerta Vermelho was a crossover/thrash band from Belo Horizonte, Brazil, formed by veteran underground musicians who swapped roles to channel raw punk and thrash energy. Their 2024 EP "Zero" — a six-track, 15-minute release on Metalpunk Overkill Records — fused punk aggression with metallic weight and was recorded entirely in Portuguese, arriving on limited-edition orange cassette. The band drew from a lineage of Belo Horizonte crossover acts and influences ranging from Misfits and Hüsker Dü to Brazilian punk outfits like Replicantes and Plebe Rude before splitting up shortly after the release.

Algoz Profanador is a black/thrash metal band from São Paulo, Brazil, playing in the raw and chaotic tradition of Brazilian black-thrash that traces its roots to acts like Sarcófago and Vulcano. Their 2019 album "Vagando nas Sombras do Caos" is a 10-track assault drawing on occult imagery, nihilism, and philosophical darkness, with track titles like "Before the Abyss" and "Devastation Without Mercy" anchoring their sound in the most aggressive end of the São Paulo underground. The band remains active and independent.

Alkimistal is a São Paulo-based metal act working the intersection of melodic death metal, thrash, and metalcore. Their Bandcamp release 'Reflections' showcases the blend of harsh riffing and melodic hooks that defines their sound within São Paulo's underground scene.

Alkymenia is a thrash metal band from Caruaru, Pernambuco, formed by three brothers — Sandro Silva, Lalo, and Dennis — who have built one of the most consistent careers in the northeastern Brazilian underground. Their 2023 album 'Meeting Before the Death' was recorded with producer Tue Madsen (Meshuggah, Behemoth) at Antfarm Studio in Denmark, and the band has toured Europe across 12 shows in 8 countries.