Morthur is a power trio from Erechim, Rio Grande do Sul, featuring guitarist and vocalist Jeferson Casagrande alongside drummer André Cândido and bassist Fabricio "Ganso" Macali, blending old-school and modern death metal influences into a dense, riff-driven sound. Their 2017 debut album Between the Existence and the End, co-released by Sangue Frio Produções and ABC Terror Records, marked them as a serious entry in the southern Brazilian underground death metal scene.

Morthure emerged from Curitiba's underground scene with a sound anchored in the crossover zone between thrash and death metal, carrying the weight of the band's earlier existence as Overlook. Their debut album Where Everything Shall Die, an eleven-track record released independently, established their appetite for punishing riff structures and aggressive tempos.

Mortiferian is a death metal band from Medellín, Colombia, active since 2008. The band released their debut demo self-titled in 2008 and their first full-length, Casus Morte, in 2013, followed by a return to activity in 2023 with new singles and the 2025 EP Litaniae Funeris Abyssi. Their music explores themes of death, anti-religion, and occultism.

Mortiferik is a one-man funeral doom project built around the bleakest end of the death/doom spectrum, drawing on the suffocating pace and crushing despair of the genre's key forebears. The project released the "Empire of Sadness Returns" EP and appeared on the "Doomed Serenades" Brazilian doom compilation, marking it as a committed voice in the country's underground doom scene.

Mortify is an old-school death metal band from Concepción, Chile, drawing on both classic and progressive influences within the genre. The band released their debut album Mortuary Remains in 2017, followed by their second full-length Fragments at the Edge of Sorrow in 2022.

Mortuary was a death metal band from Buenos Aires, Argentina that was active from 2021 until their split-up. The band contributed the track "Addiction to Horror" to the South American death metal compilation Preservation of Death Vol. 2: South American Massacre — First Blood, their most documented public release.

Mortífera from Campina Grande holds a notable place in Brazilian metal history as one of the country's earliest all-female death metal bands, active from the late 1980s into the early 1990s and documented on Metal Archives with a 1989 rehearsal demo. Their brief existence in the northeast underground left a mark as a rare example of women fronting the uncompromising heaviness of early death metal in Brazil.

Motra are a death metal band from Sorocaba whose lyrics dig into mental disorders, pain, and psychological collapse. Their 2025 album 'Óbice' — a ten-track statement of unrelenting brutality — earned the band international attention including coverage in Russian metal media.

Mourners Lament is a death doom band from Viña del Mar, Chile, active since 2004 and recognized as part of the Chilean doom scene alongside Uaral, Mar de Grises, and Poema Arcanus. Their catalog spans four releases — from the debut Unbroken Solemnity (2008) through We All Be Given (2017), released on Hammerheart Records, to A Grey Farewell (2024) — a nearly 65-minute album of crushing riffs, guttural vocals, and atmospheric synths.