Howenh is an instrumental heavy metal project from the Santiago metropolitan area of Chile, founded in 2015 by guitarist and composer Iván Aguayo. The band blends doom, dark wave, and post-rock into an atmospheric, largely instrumental sound, documented across two albums: Kren (2015) and Sheol (2018).

Humanicidio was a thrash and heavy metal band from Rosario, Argentina, whose lineup included David Sanchez on guitar and vocals, Nicolás Sanchez on lead guitar, Franco Mena on bass, and Diego Forteaga on drums. The band released a four-track demo in May 2016 and a self-titled album in 2018 before splitting up.

Hëiligen is a traditional heavy metal band from Santiago, Chile, formed in the mid-2010s with a mission to carry forward the legacy of 1980s heavy metal in the style of Iron Maiden and Judas Priest. The band released the EP "Return to the Battle" before issuing their debut full-length "Shadows in the Church" in 2020 through Tradition Metálica Records, with lyrics addressing cosmology and critiquing organized religion.

Hënkel is a heavy metal band from Villa Mercedes, San Luis, Argentina, active since around 2010 and known for their 2011 demo "Cerca del Final". Their debut album "Génesis", recorded between October 2018 and March 2020 with drums and vocals tracked at Estudio DAB in Villa Mercedes, was released in 2021.

Ignited is a traditional heavy metal band founded in 2017 in Balneário Camboriú, Brazil, by vocalist Denis Lima, guitarist Dalton Castro, bassist Martin Bellucci, and drummer Maurício Velasco. Their 2019 debut full-length "Steelbound," produced by Thiago Bianchi in São Paulo, established the band in the international heavy metal circuit and surpassed 200,000 Spotify streams. The follow-up "Cradle of the Wicked" was released in October 2023, recorded at Studio Fredman in Gothenburg, Sweden and produced by Fredrik Nordström, known for his work with Arch Enemy and Dimmu Borgir.

Impetra is a traditional heavy metal band from Santiago, Chile, formed by two cousins and active from 2016 into 2017 before going on hold. Their debut demo "It's About Honor," recorded at Mazazor Studio in February 2016, introduced their approach to classic heavy metal with lyrical themes centered on nostalgia, excess, and self-destruction.

Incidamus is a dark heavy metal project founded in Buenos Aires, Argentina by a musician known as Desgarro, drawing on themes of depression, betrayal, and isolation. The band released the album "El Hedor, La Ruina, La Sangre" in December 2017 through Despreciable Realidad Fanzine, an eight-track record that showcases their bleak, heavy-punk approach.

Indiscipline is an all-female heavy metal power trio from Rio de Janeiro, formed in 2014. The band released their debut EP "In My Guts" in 2014, followed by the full-length "Sanguinea" through Shinigami Records in April 2017, and the three-song digital EP "Psalms of Darkness" in 2019. Their lineup features Alice D'Moura on vocals and bass and Maria Fernanda Cals on guitar.

Inhibidor is a heavy metal band from Rosario, Argentina, formed in 2020 by Alberth Páez. Their debut album "Vértigo" was released in January 2022 and featured guest contributions from members of established Argentine metal acts including Horcas, Tren Loco, and Serpentor, reflecting the band's connections across the country's heavy metal scene. The album includes a cover of the classic RIFF song "En la Ciudad del Gran Río" alongside original material.