Hyedrah is a heavy and power metal band from Buenos Aires, Argentina, whose core members have included guitarist and keyboardist Leónidas Vera Janavel, drummer Christian Montes, and bassist Adolfo Arbelaez. The band released their debut full-length "Rompiendo el Silencio" in June 2015 and followed it with the EP "Fuego en la Oscuridad" in November 2016.

Imopectore was a heavy/doom/black metal band from Sorocaba, São Paulo, Brazil, drawing on dark, obscure themes across their self-released material. Operating as an independent underground act, the band blended slow doom weight with black metal atmosphere and traditional heavy metal elements. The project eventually split up after a limited activity period in the Brazilian underground scene.

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.

Inglorious Basterds is a heavy and power metal band from Indaiatuba, São Paulo, Brazil. The band released their debut full-length album, Inglorious Hearts, in 2023, a five-track record praised for its melodic riffs, cohesive bass work, and polished production.

Isen Son is a heavy and thrash metal band from Maringá, Paraná, Brazil, drawing influences from heavy, doom, and thrash metal traditions. The band recorded their debut EP "Evil" in December 2022 in Maringá, releasing it in February 2024 through Metal Archives and SoundCloud. They represent the growing underground metal movement in Brazil's interior, away from the better-known scenes of São Paulo and Belo Horizonte.

Ithaca is a heavy/groove metal trio from Buenos Aires, formed in 2020 during the pandemic lockdown, comprising Chino Gorosito (guitar/vocals/piano), Marcelo Bracalente (bass), and Pato Strunz (drums), the latter a veteran of iconic Argentine bands Hermética and Malón. The band is signed to Icarus Music and released their debut album "El Peso Que No Pesa" in September 2024, preceded by three singles — "El Sol Sin Ser," "Susurrando en Tu Mañana," and the title track — released monthly through the northern summer of 2024. The album was recorded at La Nave de Oseberg studio in Buenos Aires with engineer Martín Toledo.

Jesters & Klowns are a heavy/power metal band from Córdoba, Argentina, whose current lineup consists of Fer Melian (guitar/backing vocals), DD Garcia (drums), and Lahied (bass). The band released their debut album "The Joker King" on March 27, 2018, a ten-track, 56-minute record blending power metal and hard rock. The album is available on Spotify, Apple Music, and Bandcamp.

Kathartica is a heavy and stoner metal band from Rio de Janeiro, Brazil, formed in 2022 by guitarist Gabriel Policarpo and bassist Matheus Motta, with drummer Yael Torres and vocalist Jessé Monteiro completing the lineup. Drawing from classic heavy metal and a wide range of influences, the band blends weight and groove into their metallic sound. They are active on Bandcamp and Spotify as an independent act.

Kiko Shred is a heavy and power metal guitarist and bandleader from Americana, São Paulo state, Brazil, whose neoclassical 1980s-influenced style has drawn comparisons to the golden era of guitar-driven metal. Active since the mid-2010s, the project has released four studio albums including Riding the Storm (2018), Royal Art (2019), and Rebellion (2021), the last of which was picked up for worldwide distribution by Germany's Pure Steel Records. Kiko Shred has shared stages and sessions with singers including Tim "Ripper" Owens, Michael Vescera, and Leather Leone.