Into Morphin is a death/black metal band from Teresina, Piauí, Brazil, active since 2021. The band's confirmed lineup includes Mvreisc on vocals, Yansilva and Padua Belo on guitars, Maxribeiro on bass, and Helio on drums, making them one of the few extreme metal acts operating out of Brazil's northeastern state of Piauí.

Into the Cave is a black/death metal band from Rio de Janeiro, Brazil, formed in 2015. The band has released four full-length albums: "Sex and Lust" (2015), "True Horror Tales" (2016), "Insulters of Jesus Christ" (2018), and "The Ritual of the Blind Dead" (2020), with lyrical themes drawing from horror literature, Satanism, and Lovecraftian mythology. They operate independently and have distributed their recordings through Bandcamp.

Into the Dust is a stoner metal band from Brasília, Federal District, Brazil, formed in 2000 by former members of the death/thrash act Grothesc. Drawing inspiration from Black Sabbath, Saint Vitus, and Candlemass, the band released a debut demo in 2000, a second demo "March of Believers" in 2006, and two EPs — "ITD" in 2014 and 2018 — building a steady presence in the Brazilian underground doom and stoner scene.

Into the Fucking Grave is a death metal band formed in 2017 in eastern Antioquia, Colombia, drawing influence from old school death metal and grindcore acts such as Morbid Angel, Autopsy, Terrorizer, and Benediction. The band has released three full-length albums: Absorbed by Faith (2019), Episodio humano (2021), and Fatuidad corpórea (2025), with the second album also appearing on the Colombian Death Metal Compilation Vol. II.

Intravenosa Izquémica is a death metal band from Iquitos, Peru, representing one of the more extreme acts to emerge from the Amazonian city. The band released their debut demo "Agonía" in 2025, a four-track offering that establishes their brutal approach to the genre.

Introspectiva is an atmospheric black metal solo project created by Martin Di Nolfo in Avellaneda, Buenos Aires, with additional vocal contributions from Dany Tee. The project debuted with the three-track EP "Origin..." in September 2014, followed by the eight-track debut album "Transfiguration..." in June 2015 — released as a limited digipack CD of 100 copies alongside a digital edition. A third album, "Between World's", was independently recorded between March 2020 and August 2021 and released in October 2021, exploring themes of parallel dimensions, nature, and existential reflection.

Introspective Existence is a doom metal duo from Rio de Janeiro, Brazil, formed by Dark Doom (vocals) and Desolate (guitar and bass), drawing on 1990s influences to craft slow, introspective heavy music. The band released the single and 7" vinyl "Dying Poem," their debut physical release, establishing their presence in Brazil's underground doom scene.

Invasão Bestial is an old school death metal band from Rio de Janeiro, Brazil, founded in 2016 by guitarrist Italo, bassist Kadu, and drummer Biquinho. Operating as an independent act within the Rio underground scene, the band pursues an aggressive, no-frills approach to the genre rooted in anti-religious themes and raw brutality.

Invazão is a death metal and grindcore band from Curitiba, Paraná, Brazil, active since 2000, making them one of the longer-running acts in their local underground scene. The band released the grindcore record "No Religion," and their lyrical themes address anti-government and anti-pollution subjects alongside the genre's characteristic intensity.