Usually a minor character but sometimes main characters inadvertently fall into this category, are characters that do not undergo any drastic changes mentally and emotionally throughout the course of a book, series, movie, television show, etc. They usually have only a few known traits that they are known for usually consisting of stock character qualities. Compared to a round character whose much more complex and flawed, like a real person.
See character development.
Laura was a flat character; she was only there to help move the story along as she was only known as vivacious and a good cook, nothing about her personality changes by the end of the book.

Bella Swan is a flat character, she undergoes no growth throughout the course of Twilight. She never learns a lesson from her mistakes because her actions never result in any consequences.
by +he realist. February 5, 2009
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