Foil is a character who has the same background as the Katalyst
Archetype He or she is a character who predominantly exhibits goodness and struggles against evil in order to restore harmony and justice to society e.g. Beowulf, Hercules, D’artagnan from “The Three Musketeers”
Protagonist A protagonist is the central character in a story: the protagonist of Huckleberry Finn is — guess who? — Huckleberry Finn.
Antagonist An antagonist is someone who opposes someone else. In the book "How the Grinch Stole Christmas," the antagonist is the Grinch, because he tries to make life miserable for every Who down in Whoville.
Catalyst A catalyst is an event or person causing a change. Getting kicked out of your parents' house might be a catalyst for becoming more independent.
Round character A round character is a term coined by E.M. Forster and is the direct opposite of a flat character. A round character is extremely realistic, behaving and speaking in a "real life" manner. The character is complex and increases in complexity throughout the story.
Flat character A flat character is a type of character in fiction that does not change too much from the start of the narrative to its end. Flat characters are often said not to have any emotional depths. E. M. Foster has discussed some features of flat characters in his book “Aspects of the Novel
Growing character is a character that changes a lot throughout the story.
Caricature A caricature is a satirical, exaggerated portrayal of person. You'd better not caricature your father by walking bent-over and speaking in his high voice. If he catches you, you'll be in trouble!
