Moretools emerged from the Brasília underground with a self-titled debut that fuses death metal, grindcore, thrash, and hardcore into a relentlessly aggressive whole. The band has shared stages with Krisiun, Onslaught, and Torture Squad, and appeared at major festivals including Porão do Rock.

Morferus is a death metal band from Banfield, Buenos Aires, whose lineup includes vocalist Leandro Cabrera, guitarists Mario Meza and Sebastian Almada, bassist Denis Camacho, and drummer Pablo Meza. Their 2018 album Argentina Psicópata — a ten-track record available on Spotify — takes its lyrical themes from notorious Argentine criminal figures and cases, including El Petiso Orejudo and Robledo Puch.

Morgue is a black metal band from Quilpué in Chile's Quinta Región, active within the regional underground scene alongside bands such as Kalkü and Beelzebuth. The band contributed two tracks, "Olvidado Resplandor" and "Arcano XIII", to the 2023 five-band split En el Caos de la Oscuridad, recorded at CIRAR Metal Records in Peñablanca.

Moriquëndi was a power/progressive metal band from Mendoza founded in 1998 by Roly E. Testini (1975–2008), whose songwriting drew from J.R.R. Tolkien's mythology and his own original fantasy stories. The band's debut demo El Último Elfo Oscuro was recorded in January 2001 at Estudios ADN with Aníbal Rivero and Diego Rubio, and the lineup included drummers Marcelo Narváez, guitarists Javier Vildoza and Sebastián Narváez, bassist Gabriel Narváez, and keyboardist Nicolás Sánchez.

Mormoth is a one-person raw black metal and dungeon synth project from Neiva, Colombia, founded in 2023. The project operates under the Blackflame Records label and has been prolific since its formation, releasing multiple full-lengths including Anticristo and El Bajo Astral alongside the Imperium Satanae EP, all within its first two years. Lyrically the project explores Satanism, paganism, and anti-Christian themes.

Morning Dead is a death doom solo project from Río Bueno, southern Chile, driven entirely by multi-instrumentalist Sebastian Ocampo. The project released its debut full-length, Desde el Otro Lado, in 2023.

A one-man project helmed by Matheus Leonel, previously of Midnight Loss, Morphin merges the languishing weight of funeral doom with melodic death metal's emotional melodicism. The project inhabits a space between isolation and fragile beauty, shaped entirely by Leonel's solo compositional vision.

Morri fuses blackened thrash with the abrasive energy of crust punk, drawing on the raw aggression shared between those worlds. Their 2019 EP "Não Existe Vida," recorded at LF Studio in Realengo, announced a band with no interest in polish — just velocity, hostility, and grime.

Led by guitarist and vocalist Fabrício Moraes, a veteran of the Brasília metal scene through his work in Dark Avenger and several other local acts, Mortaes debuted in 2007 with the album "Obsessive Visions" on Die Hard Records. The band blends death and black metal with neoclassical guitar flourishes, and the debut featured guest contributions from members of Dr. Sin, Khallice, and Miasthenia.