Khaotic is a one-person black metal project from São Paulo, Brazil, created in 2012 by D. Profaner, who handles all instruments and vocals. The project's output is marked by dense atmospheres and raw, misanthropic black metal, with themes centred on human weakness, anti-Christianity, and death. The band released the demo Antichrist Propaganda in 2012, followed by the EP The Beauty of Death and the full-length debut Tenebrae (2013).

Kliffoth is a black metal band from General Roca, Río Negro, Argentina, active since 2001 and drawing on themes of fantasy, occultism, and Viking mythology. The band released demos in 2003 and 2006, and their full-length album "Infinitum Tenebrarum" appeared in 2014. They also contributed the track "The Golden Walls of Heaven" to "Odens Ride Over Southernland — An Argentinean Tribute to Bathory" (2013).

Knife of Melqart is an anonymous black metal project from Buenos Aires whose membership is deliberately concealed. The band debuted in October 2013 with the EP "Lord of Tyre" and followed it with "META ƟHPION" in May 2016, drawing coverage from outlets such as No Clean Singing. Their later single "Sovereign Prince of Rose Croix" continued their exploration of occult and Phoenician-tinged themes.

Koma is a death/black metal and grindcore band from São Paulo, Brazil, operating under an explicitly antifascist, anarchist, and communist ethos. The band released their debut EP "Sinfonia da Desgraça," which blends grindcore, deathgrind, black metal, and sludge metal influences. They are active on Bandcamp under the handle koma5 and present their sound as a direct fusion of extreme music with radical political conviction.

Krists Død is a black metal band from Curitiba, Brazil, formed in 2023. The band released the single "Symfonía Tou Sataná" in 2023, signaling their entry into the extreme underground.

Krod is a one-man black metal project formed in Santiago, Chile in 2021 by Zabulus Valtakunta, who handles all instruments and vocals in an effort to maintain what he describes as the roots of black metal without adornments that deviate from its anti-Christian essence. The project has been prolific since its founding, releasing four full-lengths in its first three years: Total Destroyer and Rotten Gods Burn in the Abyss of Serpents (both 2021), Black Metal Legion (2022), and Satanas Rex Inferni (2023).

Kuld is a raw black metal band from Rio de Janeiro, Brazil, active since 2015. Their full-length Beyond The Black Spell, released on April 12, 2015, spans nine tracks of stripped-back, lo-fi black metal and remains available on Bandcamp.

Kuldefølels is a two-piece black metal band from La Plata, Argentina, formed in 2017 by Marcs Hegal (guitar, vocals) and Leo Asaru (drums, backing vocals). The duo released a self-titled recording in March 2017, followed by the live album "Diagonal Oscura" (September 2018) and the studio recording "La Casa de las Mentiras" (September 2019). Their Bandcamp catalog also includes cover recordings of Burzum and Darkthrone tracks.