Maniac, based off the Norwegian series of the same name, will follow Hill's character, a patient at a mental institution, who lives out adventures in his dream. The dark comedy, directed by True Detective's Cary Fukunaga, also stars Emma Stone as a fellow patient.
Hill rocked a much different look while filming with Stone last month, as the two were photographed in head-to-toe '80s ensembles.
Maniac is set to debut on Netflix in 2018. See more on Hill's transformation in the video below.