A character who undergoes significant development throughout the course of a story.

The character you're referring to is known as a "dynamic character". A dynamic character is one who changes significantly throughout the course of the narrative. This change could be in their personality, beliefs, understanding, or any other aspect of their character.

Here are the steps to identify a dynamic character:

1. Introduction: At the beginning of the story, the author will introduce the character along with their personality traits, beliefs, and values.

2. Conflict: As the story progresses, the character will face conflicts that challenge their initial beliefs and values.

3. Change: The character will start to change their beliefs and values as they try to resolve these conflicts. This change is usually gradual and happens over the course of the story.

4. Resolution: By the end of the story, the character will have undergone significant changes. They will have new beliefs and values that are different from the ones they had at the beginning of the story.

5. Reflection: The character reflects on their journey and how they have changed. This reflection is usually what makes the character "dynamic".

Remember, not all characters in a story are dynamic. Some characters, known as "static characters", do not change significantly throughout the story. They maintain their beliefs and values from the beginning to the end of the story.