Answer:
a character whose traits, beliefs, and behavior evolve throughout the story.
Explanation:
the definition of a dynamic character is one who undergoes changes throughout the narrative, due to conflicts he encounters on his journey. A dynamic character faces trials and tribulations, and takes time to learn from his encounters, his experiences, and his mistakes, as well as from other characters.
The introduction should introduce your main character, setting, location and time. it should also either introduce the main complication, start heading for the main complication or foreshadow the main complication.