Killery is a groove/thrash metal quintet from São Luís, Maranhão, Brazil, formed in 2019. Their debut album, Ready for the Apocalypse (2019), features nine tracks that blend aggressive thrash riffing with melodic elements and unconventional harmonic progressions, and was independently recorded and mixed at Killery Studios and KM4 Produções in São Luís. The cover art was produced by Caio Caldas, a designer known for work with Paul Di'Anno, Doro, and DragonForce.

Killing Fields is a thrash metal band from Natal, Rio Grande do Norte, Brazil, with roots going back to 2002. Citing Bay Area old-school thrash as their primary influence, the band re-emerged in 2020 and released the four-track EP When Nuclear Nightmare Turns Real (March 2021), recorded at Invisible Horizons Studio with members Cid Oliveira on vocals, Roberto Phrankson on rhythm guitars and bass, Otávio Magão on lead guitar, and T-Rash on drums. The EP's lyrical themes center on nuclear apocalypse, social collapse, and existential dread.

Killing Mass was a death/thrash metal band from Santiago, Chile, whose sole known release is the 2017 EP Bloody Lands — a five-track recording encompassing both old-school thrash and death metal styles. The band has since split up, leaving Bloody Lands as their only documented output.

Kilthrash is a thrash metal band from Cerro Navia, Santiago, formed in 2016 and active on the Chilean underground circuit. Their discography spans five releases including Demolición (2016), Street on Hell (2018), Kiltro (2021), Anikilador (2023), and Enjambre Asesino (2025), all recorded and produced independently at Kilhouse Estudio in Santiago.

Kimera is a thrash metal band from Castelar, Buenos Aires, Argentina, formed in 2008, featuring vocalist Francisco Diaz, guitarists Maty Diaz and Danny Almeida, bassist Fernando Díaz, and drummer Gonzalo Rillo. The band released their debut full-length En Tiempos Violentos in 2017, followed by the two-track EP Esclavos Hoy y Ayer in August 2019.

Korsakov is a crossover/thrash metal band from Alumínio, São Paulo, Brazil, formed in 2011 and active in the Brazilian underground scene. Drawing on social and political themes — alongside the more irreverent staples of corruption, violence, and rock 'n' roll — the band has released records including Radiation Exposure and Unique Remains. Their sound sits firmly in the beer-soaked, pit-ready tradition of Brazilian crossover.

Korvak is a thrash metal band from Campina Grande, Paraíba, Brazil, formed in 2019 and signed to NoSlip Records. Influenced by old-school death and thrash of the 1980s and early 1990s, the band draws lyrical themes from occultism and social criticism. Their 2023 full-length Chapter II — World's Duality stands as their most developed release, recorded across multiple studios and featuring twelve tracks of aggressive, riff-driven thrash.

Krifkill is a thrash metal band from Sobral, Ceará, Brazil, formed in 2015. The band's lineup includes Keven on guitar and vocals, Byron on guitar, Madeira on bass, and Fernando on drums. They released the five-track EP State of Despair in June 2016, establishing themselves within the Brazilian underground thrash scene.

Krueger is a death/thrash metal band from Campina Grande, Paraíba, Brazil, formed in 1987. The band's lineup has included Adriano Caminha on vocals and guitar, Zé Carlos on bass, and Maurício Mocardo on drums, and they released the full-length "Turn On to Death" in 2001 through Destroyer Records, recorded at Prosound Studio in Campina Grande.