Falecido Morte Lenta is a black/death metal band from Nova Friburgo, Rio de Janeiro, formed in 2024. The band explores themes of terror, nihilism, and evil, releasing the album Possessed by Suffering as their debut statement. Operating as an independent underground act, they contribute to the growing extreme metal movement in the Rio de Janeiro state interior.

Faustino sin Cuello is a death metal band from Santiago, Chile, active since at least 2009 when they recorded their initial demos drawing on Chilean folklore and history for thematic material. The band released the single Faustino: El Degollado in 2012 and returned with the single Renacer in 2025.

Fecal Devastation is a grindcore/death metal band from Itabira, Minas Gerais, Brazil, formed in 2004 and active across multiple periods. The band released the demo Síndrome de Diarréia and the full-length Depravação Moralista, and compiled their recordings on the retrospective The Rotten Collection — Fecal Devastation Discography 2004–2021 via Italian label Olivia Records. They have appeared on numerous international compilations addressing themes of social criticism and politics through a noise-saturated grind lens.

Fim da Aurora is a death metal and metalcore band from Jundiaí, São Paulo, Brazil, formed around 2015. The band released the EP Espíritos in 2015 and has continued releasing material independently, including the album Empty in 2024, blending technical death metal brutality with metalcore elements. The group features André Bairral on vocals alongside members on guitar, bass, and drums.

Final Creation is a death metal band from Pernambuco, Brazil. Their 2022 full-length In The Valley of Death, released through Deprofundis Production and recorded at Darkside Studio by Diego Do'urden, spans seven tracks including the title piece and "Caronte," blending brutal riffing with thematic material drawn from death, ritual, and religion. The band also has an earlier demo, Last Breath, listed on Metal Archives.

Fleshpyre is a technical death metal band from Brasília, Brazil, with roots going back to 2014 when guitarist Diego Lima and drummer Daniel Moscardini began composing together in the studio. The band released their debut album "Unburying the Horses of War" in early 2018, an eight-track record praised by Brazilian metal press for its technical complexity and melodic sensibility, featuring cover artwork by artist Zakuro Aoyama. The lineup is completed by vocalist Yuri Sabaoth and bassist Josivan Ribeiro.

Foken Rotten Noise is an old school grindcore and death metal band from Santiago, Chile, with members drawn from various corners of the Chilean underground metal scene. The band released "Wastedlands" in 2013 through Thanatology Productions in a limited run of 500 CDs, followed by "The Finest Shit" in 2015, both albums channeling raw, anarchic energy with lyrical themes of anti-politics, anti-greed, and personal freedom.

Foramen Magnvm is a death metal band from Puerto Montt, Chile, operating within the death thrash tradition and active since 2013. The band released a split in 2018 alongside other Chilean death metal acts, and their early material, including the track "Silent Shadows," positions them within the underground extreme metal scene of southern Chile.

Fosa Común is a death metal band from Puerto Montt, Chile, formed in 2015 and rooted in the dirty, visceral tradition of Autopsy and Grave. Their album "Devorado por la Muerte" was originally issued through Infinito Envenenado in 2021 and reissued on vinyl by Sick Rites Records in 2022, establishing the band as a key act in Puerto Montt's underground death metal scene.