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.

Hevilan is a heavy/symphonic metal band from São Paulo, Brazil, founded by guitarist Johnny Moraes. Their debut album The End of Time was released in 2013 in Brazil and Japan, and later picked up by Massacre Records for a European release in 2015, earning the band spots opening for Masterplan and Edu Falaschi. A second full-length, Symphony of Good and Evil, followed in 2021.

Hevnoraak is a Brazilian doom/death metal project formed in 2019. Their debut release Sinking Into Nothingness, issued on February 8, 2019, comprises three tracks — "Tangible Existence," "A Fair Death," and "Ensnared Aura (An Ode to Emptiness)" — establishing a slow, oppressive sound rooted in atmosphere and weight. A cassette edition of the release was pressed by Final Hours of Christ Productions in 2022.

Hex Crow is a heavy/speed metal power trio from Bucaramanga, Colombia, founded in late 2015 by Daniel Mantilla, Felipe Ortega, and Sebastián López, all veterans of local bands including Hatred and Perjurio. The band released their debut demo Demons, Witches & Loud Noises before issuing the full-length Forward to the Past in December 2019, a limited cassette release through Vermin Records and All For One Heavy Metal United. Their sound blends the raw power of traditional heavy metal with relentless speed metal energy.

Hexagram is a death/thrash metal band from Batuco, in the Santiago metropolitan area of Chile. The band is unsigned and independent, with lyrical themes centered on religion, death, and slaughter.

Hexen Sabbat is a dark doom metal band from Rio de Janeiro, Brazil, formed in 2024. The band released their debut album Dramatic Dreams on April 11, 2024, through Eclipsys Lunarys Productions, recorded at HR Studio and Pré-Sound Studio with production by Orion Gobath and David Malkuth. Their sound blends slow, heavy doom textures with occult and melancholic themes.

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.

Hibria is a power/speed metal band from Porto Alegre, Rio Grande do Sul, Brazil, formed in 1996 and internationally recognized for their technical precision and ferocious tempo. Their debut album Defying the Rules (2004), mixed by Piet Sielck of Iron Savior, was released in Japan where it found a devoted following, and the band went on to support acts including Metallica and Black Sabbath. Subsequent albums include The Skull Collectors (2008), Blind Ride (2011), Silent Revenge (2013), and the self-titled Hibria (2015).