The Gambling Ghost (movie, 1991)

Sammo Hung plays three different characters: Fatty, Fatty's father and Fatty's grandfather, Hung Kau. Fatty is a hotel worker, yearning for sudden wealth. Therefore, he, and his co-worker, enter the gambling world, to the dismay of his father. When Fatty hits rock bottom, the ghost of his grandfather resurrects to help him. However, Fatty learns that his grandfather was murdered, therefore, he will stop at nothing to avenge his death.