Formed in Belo Horizonte in 2012 by members steeped in Venom, Bathory, and Hellhammer, Ossuário play raw, uncompromising black/speed metal soaked in occult darkness and stripped-back aggression. Their debut EP Metal Antichrist (2016) established their reputation in the national underground, and the 2025 follow-up Metal Póstumo — released on cassette by Morbid Ways to Die and on CD by Cianeto Discos — continues that tradition with the current trio of Coveiro, Necrolsky, and Splatter.

Ovvercross is a heavy metal trio built around the guitar and vocals of Bruno Oliveira, whose muscular riff-driven attack sits somewhere between classic NWOBHM and the harder-edged German heavy metal tradition. Their 2021 debut full-length Stuttgart, 1943 — preceded by the EP So Survive — is a concept record centered on the true story of a nine-year-old boy sheltering from an Allied air raid over Stuttgart, turning historical trauma into anthemic, propulsive metal.

Oxida was a short-lived speed metal outfit from Buenos Aires that emerged in 2023 and dissolved not long after, leaving behind one of the more fleeting entries in Argentina's crowded underground metal registry. The band operated squarely in the tradition of old-school speed metal — the genre Argentina helped define in the 1980s through foundational acts like V8 and early Horcas — reaching back to the era when the boundaries between NWOBHM-inspired heavy metal and the proto-thrash aggression of Motorhead-worshipping bands had yet to fully crystallize. Buenos Aires has always harbored pockets of musicians committed to this unfashionably raw style, and Oxida planted their flag firmly in that territory. Their existence was brief enough that their catalog and full lineup details remain sparse in the public record, but their registration on Encyclopaedia Metallum confirms their presence in the capital's underground scene, where speed metal never truly went out of favor. Like many underground Argentine bands of their vintage, they likely played the circuit of small venues and metal fests that form the backbone of BA's non-commercial metal ecosystem — spaces where fidelity to genre tradition matters more than trends.