Ratboy is a 1986 American drama film directed by and starring Sondra Locke. The make-up effects were designed by Rick Baker. The film's scenario is at times comic or serious, and one of its peculiarities is that there never is any explanation for Ratboy's origin and existence as a human-rat hybrid.
Ratboy had a troubled production and was both a critical and commercial failure. However, it received better reviews in European countries, especially France, winning the Deauville American Film Festival.