Angerstorm are a death metal quintet from Quillota, Chile, who gained regional recognition when they were invited to open for Mexican-American extreme metal band Brujería at a show in Valparaíso in April 2022. The band, whose members include drummer Darko Fernández, have continued to anchor the local underground scene, most recently performing at the Kill-ota Metal Fest III in San Pedro in February 2026.

Anguish Project is a Brazilian heavy metal band led by bassist and composer Kaô (ex-Venus), with vocalist Sergio Faga (Children of the Beast) and guitarist Denis Okuma. Their 2025 debut album "What's Believing?" was mixed by producer Roy Z and features guest appearances from musicians tied to Viper, Angra, and Dr. Sin, combining classic heavy metal songwriting with philosophical lyrical themes drawn from Freud and Schopenhauer.

Anhaguama is a death/black metal band from Arujá, São Paulo, Brazil, formed in 2019 and operating in the underground extreme metal scene of greater São Paulo. Their music draws from the aggressive intersection of death and black metal, a tradition with deep roots in Brazil's extreme metal history.

Anhan is a depressive black metal project from Nossa Senhora da Glória, Sergipe, Brazil — a notably isolated location for the genre in the Brazilian northeast. Formed in 2014, the project released the EP "Na Escuridão" that year, working within the DSBM tradition of slow, bleak compositions and introspective, despairing atmospheres.

Anhangah is a raw black metal project from Artur Nogueira, São Paulo, Brazil, formed in 2025. The project released a demo and the single "Profecia do Caos," working in the lo-fi, primitively produced style characteristic of raw black metal with lyrics rooted in occult and prophetic themes.

Anhedonia is a black metal band from São Paulo, Brazil, signed to the American extreme metal label Maggot Stomp. Their debut album "Impudent Dominance," released in January 2026, delivers eight tracks of brutal, groove-inflected extreme metal, and sold out its limited vinyl pressing shortly after release.

Anima Inmortalis is a death metal band from Santiago, Chile, whose name means "Immortal Soul" in Latin. The band released the full-length album Everlasting in 2005 and followed it with the EP Understanding the Darkness in 2010 before issuing More than Just Flesh and Blood in 2011 through Australis Records, recorded at 15 Hz Studios in Santiago. Their lyrical themes explore astral concepts, philosophy, and the nature of life and death.

Animus Necandi is a thrash metal band from Salvador, Bahia, Brazil, drawing from the aggressive, fast-picking tradition of Brazilian thrash metal. Originally active from 2004 with a 2005 demo titled "Bloody World," the band later resumed activity, representing the thrash underground of Brazil's northeastern capital.

Aniron is a symphonic gothic metal band from Buenos Aires fronted by soprano vocalist Bárbara Rossi, whose lyrical singing is the defining element of the band's sound. The project coalesced around guitarist Diego Mancilla and keyboardist Julio Sotelo before Rossi joined, and the band released their debut EP Concealed Within in July 2013. The name Aniron is taken from Elvish, meaning "I desire."