Vladimir Propp was a Russian folklorist whose work Morphology of the Folktale examined the makeup of Russian folktales. In addition to the thirty-one functions within the plots of folktales, Propp also identified recurring characters that he defined by function (Kolesnikof 450).

This table lists the common folklore and fairy tale dramatis personae identified by Vladimir Propp.
A brief description of each archetypal character is given.

Vladimir Propp's folklore/fairy tale dramatis personae (Webster, par. 7)
ArchetypeCharacteristics
Villainstruggles with the hero
Donorprepares and/or provides hero with magical agent
Helperassists, rescues, solves and/or transfigures the hero
Princessa sought_for person (and/or her father) who exists as goal and often recognizes and marries hero and/or punishes villain
Dispatchersends the hero off
Herodeparts on a search (seeker-hero)
reacts to the donor and weds at end
False Heroclaims to be the hero, often seeking and reacting like a real hero

What is particularly valuable about Propp's functional characters is that, since the focus is on the functional nature of the character, the traits can be applied to aspects other than actual characters. For instance, anything that functions in opposition to the main character can be the functional villain. In novels that focus on the conflict between humanity and nature, nature can function as Propp's villain. Anything that functions as the desired goal could be the "princess": success, fame, fortune, and so on. Similar applications can be made with the other functional characters.