Who has the best redemption arc in Game of Thrones?

Jaime Lannister has one of the best redemption arcs in Game of Thrones. Initially introduced as a villain who pushed Bran Stark out of a tower window and who was carrying on an incestuous relationship with his twin sister Cersei, Jaime's character was complex from the start. Over the course of the series, Jaime's character undergoes a significant transformation, including losing his hand and finding redemption through his love for Brienne of Tarth. He comes to terms with the consequences of his past actions and makes efforts to redeem himself, ultimately choosing to fight alongside the living in the Battle of Winterfell and saving Brienne's life.