Kill Hill is a power/thrash metal band from the Quilmes area of Buenos Aires, Argentina, who released their self-titled debut album in 2018, recorded and mixed by Ivan Iñiguez at Absolute Studios in Berazategui. Their second full-length, Tetrinencia, followed in December 2022 — recorded at De La Wave Studios between 2021 and 2022 — and was dedicated to the memory of guitarist David Gómez.

Killepsia is a progressive and heavy metal band from Porto Alegre, Rio Grande do Sul, Brazil, formed in 2015 by guitarists Vicente Queiroz Silva Telles and Giuseppe Oppelt Delazeri, bassist and vocalist Ian Garbinato de Fagundes, and drummer Rafael Severo Meira. The band released their self-titled debut EP in June 2017, a four-track record that addresses themes of uncertainty, societal expectation, and the passage of time, marking them as a notable presence in Porto Alegre's heavy metal scene.

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.

Killin'Ground is a thrash/groove metal band from Fortaleza, Ceará, Brazil, formed in 2019. Their debut release, The Weight of the Crown (January 2019), showcases a sound rooted in aggressive thrash with groove-oriented rhythms, featuring tracks such as "Another Day in Hell." The band also contributed to the 2022 compilation The Gates of Brazilian Metal Scene, released by MS Metal Records.

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.

KillMister is a heavy metal band from Santos, São Paulo, Brazil, formed as a Motörhead tribute act before developing original material. Their EP Ride Down to Hell (June 2018) — produced, recorded, mixed, and mastered at O Beco Estúdio in Santos and limited to 500 copies — features original compositions alongside live bonus tracks. The band is fronted by vocalist Luiz Carlos Louzada, known from the Brazilian metal veterans Vulcano.

Killrape is a thrash/death metal band from Rio de Janeiro, Brazil, active since 1993 under the earlier name Corrosive, founded by brothers Nilmon Filho (guitars) and Rodson Lemos (bass and vocals). The band released their debut full-length Corrosive Birth in May 2010, followed by Corrosive Legion in 2011, with subsequent releases including Corrosive Master and Corrosive Reincarnation... Reborn in Hell available via Bandcamp. Their self-described style blends aggression with destructive melodies in the tradition of extreme Brazilian metal.

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.