Erving Goffman and Vladimir Propp developed theories about common character types that appear in narratives. Goffman identified four main character types: the protagonist, deuteragonist, bit player, and fool. Propp said stories typically include a hero, villain, dispatcher, donor, helper(s), false hero, and princess/heroine. Tzvetan Todorov and Claude Levi-Strauss developed structural theories of narrative. Todorov described a typical narrative structure as involving an initial equilibrium, a disruption, recognition of the disruption, an attempt to repair the damage, and a new equilibrium. Levi-Strauss said all narratives can be reduced to binary opposites such as good vs evil