Luís Kalil is a Brazilian neoclassical heavy metal guitarist born in Bagé, Rio Grande do Sul, who relocated to Los Angeles to study at the Musicians Institute. He released his debut album Insight in 2015 at age 15, earning international recognition and becoming the first Brazilian guitarist to perform at EMGtv studios. His 2022 single Reverse Strike, featuring Megadeth drummer Dirk Verbeuren, showcased his signature reverse tapping technique and placed him among the prominent names in contemporary shred guitar.

Lybrian is a power/progressive metal band from São Paulo, Brazil, formed in 2023 by a five-piece lineup including vocalist/bassist Marc Maximo, guitarist/vocalist Lee Shade, guitarist David Thomazone, keyboardist Davi Miaty, and drummer John Oliver. The band released a string of singles in 2024, including "Eyes of Fairy" (February), "Voices of Valhalla" (March), and "Soul in Chains" (December), establishing an epic, melody-driven sound.

Lycanthrope is a black/heavy metal band from Melipilla, in Chile's Santiago Metropolitan Region, with occult themes running through their work. They released a rehearsal demo early in their existence and have been documented on the Encyclopaedia Metallum as part of the Chilean underground metal scene.

Lycanthropy was a death/thrash metal band from Ituiutaba, Minas Gerais, Brazil, active from the late 2000s. They released a debut demo in January 2009 and earned an honorable mention at the 2008 FECAP Pontal Song Festival with their track "Run While You Can," performing at shows across multiple Brazilian cities before splitting up.

Lykanthropia is a traditional heavy metal band from São Gonçalo, Rio de Janeiro, Brazil, whose themes center on lycanthropy, werewolves, and medieval battles. The band is listed on Encyclopaedia Metallum with the album "Werwolf" among their releases, operating as an independent act.

Lymphangiomas was a sludge metal and grindcore band from Barranquilla, Colombia, active from 2022 to 2025 and released through Aborto de Perra Records. During their brief run the band issued several EPs and splits, including "64 Traxx," "Cancrum Oris," and "Gangrena De Fournier Vulvar," all released in 2022.

Lyria is a symphonic alternative metal band from Rio de Janeiro, Brazil, founded in 2012 by mezzo-soprano and songwriter Aline Happ. The band released their debut album "Catharsis" in 2014 and followed it with "Immersion" in 2018, both funded through crowdfunding campaigns that raised over $8,000 and $13,000 respectively from fans worldwide. Lyria won the Palco MP3 award for most-accessed heavy metal artist in both 2016 and 2017, and their songwriting frequently addresses themes of mental health, autism, and neurodiversity.

Lyriahn is a metalcore band from Santiago, Chile whose lineup includes vocalist Sandra Mayfair, guitarist Prema Sagar, bassist Axel Loaiza, and drummer Rolando Martínez. The band released the tracks Tempus and Mind Circuitry in 2018, showcasing a sound rooted in modern alternative and experimental metal.

Lábar'Oculto is a black/doom metal band from Piraju, São Paulo, formed in 2017, whose lyrics draw on poetry, literature, and occultism. The band released their self-titled debut album in 2020 through Misanthropic Records and Black Hearts Records, recorded at Amarello Sound Studio between 2017 and 2019. The album was preceded by the single Lábar'Oculto (Contravulgata) and a live recording from UMF XVIII.