Paarthurnax channel orthodox black metal with themes rooted in Gnostic Luciferianism and sinister philosophy, delivering cold, uncompromising material in the tradition of the European underground. The band released their debut full-length Twelve Paths in September 2020, followed swiftly by contributions to the three-way split Where White Gods Rest alongside Inexistência and Além-Homem, released on Arte Ancestral Records the same year.

Pacto de Mutilación is a blackened death metal band from Manta, Ecuador, founded in 2017 by José Rodríguez and currently signed to Entocomophobic Records. The band channels anti-Christian and occult themes through a savage blend of black and death metal, releasing material including the demos Culto Tribal and Lamashtu, followed by the 2021 EP Lamashtu II and the full-length Sanguinaria Misantropía. Their sound reflects the ferocious underground metal scene that has emerged along Ecuador's coast.

Pactum have spent the better part of three decades building one of the more prolific back catalogues in Brazilian black metal, with a sound anchored in Satanic themes, raw production values, and a devotion to the grimmer end of the second-wave tradition. Their discography spans titles such as Nigredo, Haeresis, and the more recent Rex Infernus, consistently holding to a philosophy of darkness and blasphemy without concession to trends.

Pagan Spirits is a raw black metal act out of the small northeastern city of Macaparana, Pernambuco, drawing on pagan themes with an underground ethos cultivated through releases on Suicide Apology Records. Their 2014 recording "Bajo el manto sagrado de la noche" captures a primitive, atmosphere-first approach rooted in second-wave black metal tradition.

Pagan Winter was a short-lived black metal project from Fortaleza that released "A Cold Wind Blows" in 2020, a two-track recording that blends raw black metal with dungeon synth and ambient textures. The band split up not long after, leaving behind a spare but atmospheric document of their brief existence.

Panteon are a melodic death/black metal band from San Salvador de Jujuy in northwestern Argentina, one of the few metal acts operating in that region. Metal Archives documents two albums under their name — a self-titled release and Septum — and the band has been active across multiple periods since the late 1990s, signed at various points to Total Desaster Productions.

Active since the early 2000s, Paradise in Flames meld symphonic black and death metal with Brazilian folk elements, framing their work around explicitly philosophical and anti-religious concepts they call "extreme philosophical symphonic protester metal." Their seventh album Blindness (2024) is a concept record exploring religion as psychological illness, featuring classical arrangements and the folk-inflected single "Black Wings."

Founded by Mantus and Triumphsword — veterans of the local black metal outfits Mysteriis and Thorns of Evil — Patria weaves South American ferocity with the cold, atmospheric currents of Scandinavian black metal. The band built a substantial catalog across the 2010s, with albums like "Sovereign Misanthropy" (2010) and "Individualism" (2014) drawing notice for Triumphsword's commanding vocals and an unflinching focus on misanthropy and anti-religious darkness.

Patriarchy was a black metal project from Buenos Aires that operated briefly from 2019 until splitting up not long after, existing entirely within the shadows of Argentina's substantial but largely unsung black metal underground. Buenos Aires has produced a diverse range of black metal acts across the decades — from the raw, primitive hordes of the 1990s who absorbed the Scandinavian second wave almost in real time through underground tape trading, to more recent projects exploring atmospheric, ambient, and post-black metal territories. The name Patriarchy, deployed by a black metal band, sits in an interesting space: it could represent a straightforward adoption of dark thematic imagery common to the genre, an ironic or critical gesture toward social power structures, or simply a provocative moniker in the tradition of Argentine black metal bands who favor confrontational names. Black metal in Buenos Aires has historically operated through small dedicated zines, tape labels, and underground shows — a world largely invisible to the mainstream music press but fiercely self-sufficient. Patriarchy's brief existence and subsequent dissolution follows a familiar trajectory for underground black metal projects globally: intense but short-lived, leaving a limited trace in the public record beyond their Encyclopaedia Metallum entry and whatever recordings they produced during their active period. Their registration with an active Bandcamp URL suggests at least some material exists in digital form for those willing to seek it out.