A shape-shifter designed to hunt criminals becomes the thing the system fears most: someone who can't be categorized. The film's production design is deliberately strange, treating identity as visual horror and romance as a problem without resolution. Joker doesn't build a world you want to live in. It builds one that makes you uncomfortable in ways that feel intentional, specific, impossible to unsee. This is sci-fi for people who want their premises to sting.

Joker was genetically engineered as part of a Special Police Task Force and can change both shape and gender. Joker takes on crime of every kind, and a little romance finds its way in around the edges of the police work. This single-episode 1992 OVA mixes action, science fiction and romance, and adapts the Joker manga drawn by Katsumi Michihara and written by Yuu Maki.