definitons

Character - the aggregate of features and traits that form the individual nature of some person or thing.

Major Character - an important character.

Minor Character - an character that's not that important.

Static Characters - minor characters in a work of fiction who do not undergo substantial change or growth in the course of a story.

Developing Character - is revealed by how a character responds to conflict, by his or her dialogue, and through descriptions. For help in developing characters.

Protagonist - is the main character in a story, novel, drama, or other literary work, the character that the reader or audience empathizes.

Antagonist - the character who opposes him or her is the antagonist.