Character Roles

Vladimir Propp

The villain - Who struggles with the hero (formally known as the antagonist)
The donor - A character who gives something to the hero to help them on their quest
The helper - A character who accompanies the hero on their request
The dispatcher - A character who sends the hero on the quest
The hero - Who departs on a search (seeker-hero), reacts to the donor and weds
The false-hero - (Or antihero), who claims to be the hero, often seeking and reacting like a read hero (i.e. by trying to marry the princess.

Linear - Beginning, middle, end. (Chronological order)
Non-Linear - Non chronological.