Place of Warship emerged from Paracatu drawing heavily on the Swedish death metal tradition, with Entombed, Dismember, Bolt Thrower, and Benediction cited as primary influences. The trio of Humberto Costa on vocals and guitar, Daniel Sabino on bass, and Wesley Reis on drums built their sound around the classic HM-2-driven heaviness of Stockholm-style death, with a notable crust and d-beat undercurrent from Discharge and GBH. Their EP Rotting Soul captures the band's devotion to that crusty, abrasive old-school death aesthetic.

Placenta was a female-fronted thrash metal quintet from Belo Horizonte active in the mid-1980s, making them one of the early all-women metal acts to emerge from the Brazilian underground. Their sole documented release is the 1987 rehearsal demo Madness in the Bus, a raw document that touched on themes from politics to Satanism, though an unofficial self-titled CD from 1992 is also known to exist.

Plague Rages is a grindcore act from São Paulo with a catalog built on anti-fascist politics, social critique, and raw sonic violence across a steady stream of splits and full-lengths. Their 2021 album Hecatombe, released via Grindfather Productions, collects 35 tracks of punishing grind and stands as one of their most substantial statements. The band has maintained a prolific underground presence since forming, including a notable 2007 split with Japanese outfit Unholy Grave on Grindcore Against Reality.

Plankton was a heavy metal band from Belém that operated briefly before splitting up, releasing a demo titled Anomalia that circulated through the underground. Their themes touched on metal, life, death, and religion within a traditional heavy metal framework rooted in the northern Brazilian scene.

Plano D is a groove metal band from Rio Grande do Sul formed in 2016, channeling the heavy, mid-tempo riff-driven energy of the genre's core influences into a southern Brazilian context. The band later evolved and continued activity under the name Obscure Perception, suggesting an ongoing drive to develop their sound beyond their original groove metal roots.

Platina was a melodic heavy metal and hard rock band from São Paulo whose name carried echoes of the legendary 1980s Platina act that featured future Dr. Sin members. This newer incarnation pursued polished, hook-driven melodic metal before disbanding after a brief run, leaving their recordings available through their Bandcamp and Spotify presence.

Platinus is a Porto Alegre-based heavy and thrash metal band formed in 2012, drawing their sound from the classic 1980s thrash tradition. Their Demo Psicótica introduced tracks like "Destruindo a Farsa" and "Vida Psicótica," and the band went on to release the conceptual full-length Tensão, which the group has described as their most thematically ambitious work.

Platoon, also known as Platoon Thrash War, is a thrash metal band from Manaus with a militaristic lyrical focus on war, conflict, and destruction. Their 2019 album Máquina de Guerra, released through Bigorna Records, delivers eight tracks of old-school thrash aggression including the standout "Casualidades de Guerra," and the band has since appeared on compilations cementing their reputation in the Brazilian underground.

A Belo Horizonte heavy metal act fronted by vocalist Cynthia Mara, Pleiades built an early reputation opening for Deep Purple on two separate occasions — the first time with guitarist André Mendonça still a teenager. The band contributed a cover of "Woman from Tokyo" to the Deep Purple tribute compilation Woman from Brazil, released by Armadillo Records in 2020.