This document discusses Erving Goffman's character theory for analyzing roles in media. Goffman's theory identifies four main character types: the protagonist (leading character), deuterogonist (secondary character), bit player (minor character with unknown background), and fool (character that uses humor to convey messages). The document then provides an example analysis of the animated movie Finding Nemo, identifying Nemo as the protagonist, his father Marlin as the deuterogonist, and Dory the blue fish as the fool character.