In a prose narrative, when a character undergoes a significant and permanent change in personality, values, or outlook as a result of the story's events, such a character is described as

A dynamic character is one who undergoes a meaningful internal change — in personality, attitude, values, or worldview — as a direct result of the events experienced in the narrative. This contrasts with a static character, who remains essentially unchanged. A stereotypical character conforms to a fixed type, and a peripheral character plays a minor role in the story.