What is a "grotesque" character? What is an example of a grotesque character from a movie or book?
A character whose behavior and more importantly appearance are out of the ordinary, bizarre, ugly and abnormal.
Probably the most famous example is Quasimodo The Hunchback of Notre Dame in Victor Hugo's novel. Quasimodo means in the form of a man. Despite his grotesque appearance he is a tragic character full of pathos as his love for Esmeralda is doomed.