Steadfast • [Character Dynamic] • The Main Character ultimately retains his essential nature • Every Main Character represents one special character element. This element is either the cause of the story’s problem or its solution. The Main Character cannot be sure which he represents since it is too close to home. Near the climax of the story, the Main Character must demonstrate whether he has stuck with his original approach in the belief that it is the solution or jumped to the opposite trait in the belief he has been wrong. When a Main Character decides to stick with his story-long approach, he is said to remain Steadfast.
From the Dramatica Dictionary