What is villian arc?

A villain arc, also known as a redemption arc, is a plot development where a previously evil or antagonistic character undergoes a change in their motivations, beliefs, or actions, leading them to become a more sympathetic or heroic figure. This transformation usually occurs gradually over the course of a story and typically involves the character confronting their past misdeeds, acknowledging the harm they caused, and making amends or seeking redemption for their actions. A well-written villain arc can add depth and complexity to a story, providing an opportunity for the audience to reflect on issues such as forgiveness, repentance, and the possibility of change. Some well-known examples of villain arcs include the characters of Severus Snape from the Harry Potter series and Darth Vader from the Star Wars franchise.