Inverno Soturno is a depressive black metal and ambient project from Belém, Pará, Brazil, active since 2015. The project has released multiple works including "Uma Nova Perspectiva Sobre o Mundo," "Alexitimia Evidente," and "Sob A Lua Negra," exploring themes of isolation and emotional despair characteristic of the depressive black metal tradition.

Inverted Cross Cult is a death/doom/sludge metal band from Porto Feliz, São Paulo, Brazil, featuring Diego Rodrigues on vocals and guitar, Guilherme Hespanhol Rufus on guitar, Viny Bial on bass, and Henrique Antunes on drums. The band released their self-titled debut album in October 2016, followed by the demo "Beyond the Towers of Silence" in 2018, with lyrical themes drawing from occultism, H.P. Lovecraft, and horror.

Invictu is a death metal band from Campinas, São Paulo, Brazil, formed by members Spike (guitar), Nick (bass), and Wulthus (drums and vocals). A young act in the São Paulo death metal underground, the band has released tracks including "Ameaça Nuclear" and "Caminhos de Morte" through their Bandcamp page.

Invision is a brutal/technical death metal band from Villa de Mayo, Buenos Aires, formed in 2006, with a lineup anchored by vocalist Dario 'Empty' Buer, guitarists Andres 'Hivvah' and Cristian 'Metal' Laureano, drummer Federico 'Fisura' Puebla, and bassist Franco Fuentes. The band released the four-track EP 'King of Eternal Suicide' in July 2017, featuring songs including 'Conscience Abortion' and 'Aokigahara', and have also issued the albums 'Concepción de Teorías Incalculadas' and 'Panteón de los Extintos'.

Invitado de Piedra is a psychedelic doom and stoner metal band from Santiago, Chile, whose lineup includes Pablo Ravelo (drums), Eduardo Rojas (bass), Felipe Godoy (guitar), and Esteban Delgado (vocals/guitar). The band debuted with the Quema el Sol EP in 2011, followed by the debut full-length Todos Caerán in 2013, and released the sprawling 33-minute single-track album Uroboros in 2021, a fuzz-drenched sludge and drone metal composition recorded at Estudio Proyectil.

Invokaos is a death metal band from Diadema, São Paulo, Brazil, formed by vocalist Bruno Bacchiega, guitarist Alexandre Jansen, bassist Léo Bulhões, and drummer Thiago Queiroz. Their debut album "Retirantes do Holocausto" (2019), released through a partnership of labels including ABC Terror and Metal Mania, features cover art reinterpreting Candido Portinari's 1944 painting and blends death metal with grindcore and crossover elements alongside politically charged lyrics.

Ioroque is a pagan black metal band from Belém, in the state of Pará, Brazil, formed in 2020. Drawing on Amazonian mythology and regional folklore, the band released their debut demo "Horrendas Criaturas da Noite" the same year, featuring tracks such as "Matinta Perera" — named after a shape-shifting creature of local legend. Their sound channels symphonic black metal traditions through the lens of indigenous Amazonian culture.

Iridio is a groove metal band from Arroyo Cabral, Córdoba, formed in 2012, featuring vocalist Gastón Ceballos, guitarist Matías Morelli, bassist Damián Andrés, and drummer Ale Pereyra. Their debut album 'A paso firme' — recorded at AV studios and engineered by Matías Tacaya — contains 12 original compositions, and the band made an early mark on the national scene by performing at Metal para Todos 6 in 2013 at Malvinas Argentinas stadium in Buenos Aires, one of Argentina's largest metal festivals.

Iron Bastard is a black/speed metal band from Itu, São Paulo, Brazil, playing in the tradition of classic European and Japanese underground metal. Their second full-length album, "Thunder Röaring Metal" (2024), released through Black Hearts Records, was cited among the top Brazilian metal releases of the year and includes covers of Holocaust and Sabbat alongside original material such as "Forged in Fire" and "Culto ao Abismo". The band has shared stages with international acts including Sabbat at the Brazilian Harmageddon festival in São Paulo.