Vladimir Propp's Character Types

 Propp's Character Types: The Dark Knight

The Hero - Batman - Protagonist, person who helps and is main character

The Villain - Joker - Villain, antagonist, tries to disrupt everything

The Dispatcher - Gordon - Relays messages and missions to hero

The Helper - Alfred - Helps hero with missions

The Princess - Rachel Dawes 

The Donor - Lucius Fox 

The False Hero - Harvey Dent