Heulend Horn is a one-man epic Viking/black metal project from Buenos Aires, with all instruments performed and composed by Friedrich Curwenius since 2003. The project's discography includes the debut "The Saga of the Draugr" (2003), the concept album "From the Caucasus to Gotland" (2006) released via Furias Records, and "Fragments from the 13th Century" (2013), all drawing on Viking mythology and medieval history.

Hexenshade is a solo black metal and dungeon synth project from Santa Fe, Argentina, founded in 2024 by the artist known as Woryon. The debut album "The Revelation of Doom..." was recorded in January 2025 in Santa Fe and released as a limited cassette by Dutch label Wolfkult Religion, drawing heavily on early Bathory in its raw, occult approach.

Hexerei is a raw black/death metal project from Valdivia, Chile, formed in early 2018 under the banner Kult der Hexerei by Spectre of the Blood Moon. The band released a self-produced demo in February 2019, followed by the split "Hexed Winds of Darkness" (2020) through Infernal Death Productions, and a 2024 career-spanning compilation on Iron, Blood and Death Corporation; their sound draws comparisons to Archgoat and Beherit, built around high-speed blasting, tremolo riffing, and occult, anti-Christian themes.

Dementiae is a black metal band from Santiago, Chile, whose members perform under the names Satanya, Draco, and Demonamorthus. Their debut demo Between Dementia and Death, released through Pagan Forest Records and Black Crusade Productions in a limited edition of 100 CD copies, draws on the atmospheric and depressive currents of early Burzum alongside elements of doom metal.

El Hijo de la Aurora (Spanish for "Son of the Dawn") is a Peruvian doom metal and psychedelic rock band formed in Lima on May 2, 2008, by drummer and composer Joaquín Cuadra and guitarist Manolo Garfias. The band has explored themes of witchcraft, occultism, and philosophy across four studio releases, including Lemuria (2008), Wicca: Spells, Magic and Witchcraft Through the Ages (2010), and The Enigma of Evil (2015), with the latter released through Minotauro Records.

Hinarivm is a black metal band from Belo Horizonte, Brazil, dedicated to the exploration of Luciferian occultism and formed in 2018. The band released their debut album Et Sapientia... on May 7, 2018, followed by Vltra Terminvm Creatvrae Ex Lvcifer Coronatvs in March 2023 via Black Hearts Records.

Hokmoth is a black metal band from Curitiba, Brazil, featuring guitarist Yuri Seima and drummer Mario Kmiecik. The duo released their debut EP "Neophytvs" in October 2019, a five-track work with themes described as poetic representations of mental and spiritual processes. Their lyrics and art are oriented around what they call the dark and rejected side of all things.

HordaWRX is a black metal band from São Paulo, Brazil, formed in 2023. They released their debut album "Sombrio & Oculto" in May 2023, a seven-track record featuring songs such as "VerdadeiroMal," "HordaNegra," and "ChamadoDaLuaNegra."

Hordes of Empire is an Ecuadorian raw/pagan black metal act formed in 2025, described as a project emerging from "ancient European ruins to Andean abysses" with a sound rooted in "iron and sacred hatred." Their 2025 debut release "A Gathering of Ancient Belirfs" was issued in a cassette edition limited to 30 copies through Nocturnal Forest Records.