Portal is an Australian extreme metal band known for its unorthodox fusion of death metal with black metal. The band's hybrid musical style is characterised by heavily distorted guitar riffs, down-tuned rhythms, and vocals ranging from "menacing, echoing" sound effects to guttural grunts. Writing for Popmatters, Adrien Begrand noted that "death metal always pretends to be scary, but [...] it's all rather harmless. That said, however, I make no mistake in saying that the death metal peddled by Australia’s Portal is truly friggin' terrifying". Lead guitarist Horror Illogium has described Portal's intent as "to capture a cinematic horror scope".