Louis has messy brown hair in the Sleepyhead's style. One of his faces shows him as possessed by Vinz Clortho, with red eyes, crooked glasses, and a confused expression. His other face shows him with an awkward grin, not possessed. He has another head with a worried expression and the chin strap for the Ghostbusters' laboratory helmet. His torso shows a light blue jacket with some dirt on it, and an orange shirt underneath. He has blank legs in dark brown.
Louis is Dana Barrett's neighbor. He is a socially awkward accountant. He becomes possessed by the Terror Dog Vinz Clortho and opens the gate for Gozer with Dana, possessed by Zuul.