Doctor Finklestein is a fictional character from the film The Nightmare Before Christmas. He is a pale-as-a-sheet mad scientist with a duckbill-like mouth and a hinged skullcap that he can open up to reveal his brain. For unknown reasons he uses a motorized wheelchair (early drawings of Finklestein depict him standing freely, and his original action figure followed this example, implying he was not always intended to be a wheelchair user). Finklestein was voiced by the late William Hickey in the film and by Jess Harnell in the video game spin-offs. His Japanese voice is provided by Yuji Mitsuya.