Human Misery is a deathgrind band formed in 2021 in Piedecuesta, Colombia. The band released the demo Corrosión del orden in 2022 followed by the demo Torned Apart in 2023, and appeared on the split compilation Grindcore (Isn't) Mediocre in 2024.

Hunger is a thrash metal band from Indaiatuba, São Paulo, founded by vocalist and guitarist Mauro Izalbert with the intent of pairing politically engaged lyrics with aggressive thrash riffs. The band released their debut full-length Hunger Feeds Misery in 2020, featuring tracks such as "Peace Is in Pieces" and "The Dead Are Not Afraid to Die", produced at Boomer Studio in Indaiatuba. The lineup on that record included Mateus Marini on guitar, Israel Santana on drums, and Tom Wolphy on bass.

Hylidae is a death and thrash metal band from Rio Branco, Acre — one of Brazil's most geographically remote metal acts — whose band name is drawn from an indigenous Amazonian ritual associated with hunting and survival. The band released their debut full-length Promiscuous World (2012), recording it in Curitiba due to the lack of suitable studios in Acre, and followed it with the second album Unbreakable Curse (2021), mixed and mastered in Fortaleza. Over their career they have shared stages with Sepultura, Nervochaos, and Demonical.

Ilizarov is a death/thrash metal band from Formosa, Goiás, Brazil, founded in mid-2014 by Danilo Rocha (guitar/vocals), Nel Dias (bass), and Veto (drums). Drawing on old-school death metal, punk, and rock and roll, the band has remained active in the Brazilian underground and released the album "Heal and Kill" in March 2025.

Imflawed is a groove/thrash metal band from Recife, Pernambuco, Brazil, formed in 2019 and comprising Arthur Santos (guitar/vocals), Jefte Felipe (lead guitar), Alisson Nascimento (bass/vocals), and Paulo Henrique (drums). The band released the live album "Live at Hellcife" in April 2021, recorded at L.A. Studios in Recife and featuring a tribute to local legends Chico Science e Nação Zumbi woven into the set.

Imminent Attack is a thrash/crossover metal band from Barueri, São Paulo, Brazil, formed in 2012. Their debut album "Deliver Us From Ourselves" (2012), produced at Casanegra studio, delivered fourteen tracks of high-speed thrash with D.R.I. and Suicidal Tendencies-influenced crossover edge, and featured a guest appearance by Pedro Poney of Violator on the track "St. Madness".

Imminent Doom is a black/thrash metal band from Rio de Janeiro, Brazil, formed in 2016. The band released their debut EP "Guerra Iminente" in October 2016, followed by the album "Ataque!" in December 2020. Their sound draws on the aggressive traditions of Brazilian black and thrash metal, delivered with raw, independent production.

Imperfecta is a heavy/thrash metal band from Rio de Janeiro, Brazil, whose concept was developed by guitarist Nilmon Filho over more than a decade before the official debut in 2021. The band released their debut album "Broken Humanity" in 2021, marking the formal arrival of a project long in gestation. Their music channels classic thrash metal aggression within the vibrant Rio de Janeiro heavy metal scene.

Incineracion is a thrash metal band formed in 2018 in Melipilla, Chile, self-described as a "rotten Thrash Metal band" rooted in aggression and speed. Their discography includes the Demo Tape 2018, the Tortura Mental EP (December 2018), the Odio y Vengaza full-length, and the 2023 single "Sangre impía."