Yami Yuugi

Yami Yuugi, known from "Yu☆Gi☆Oh!", is the spirit of an ancient Pharaoh residing in the Millennium Puzzle. After being awakened by Yuugi Mutou, he becomes a protector of Yuugi and his friends, aiding them in battles. Initially ruthless, Yami evolves into a caring and friendly figure, learning the values of friendship and unity, ultimately gaining freedom for his soul at the story's conclusion.