Both structure and dynamics can be seen at work in characters. We see structural relationships most easily in the Objective Characters who serve to illustrate fixed dramatic relationships that define the potentials at work in a story from an objective point of view. We see dynamic relationships more easily in the Subjective Characters who serve to illustrate growth in themselves and their relationships over the course of a story.

The Subjective Characters are best described by the forces that drive them, rather than by the characteristics they contain. These forces are most clearly seen (and therefore best determined) for the Main Character. There are four Dynamics that determine the nature of the Main Character's problem-solving efforts. The four Character Dynamics specify the shape of the Main Character's growth. Let's explore each of the four essential character dynamics and their impact on the story as a whole.