Sun Wukong

Sun Wukong is an iconic hero of the Chinese folklore and the main protagonist of the classic novel Journey to the West. However, in the early chapters of the story, he's a protagonist villain, who commits assault on Heaven, stealing and vandalism only to get the title of the Great Sage Equaling Heaven. Even later in the story, when he is now Xuanzang's student, Wukong still commits some morally questionable acts, though not out of malicious intent but rather for noble intents and due to his brutal nature.

Biography
Sun Wukong was born from a magical rock formed from chaos, and by the time he was born, he befriended several other monkeys. Upon discovering a special cave, he was hailed by the other monkeys as their king, the "Handsome Monkey King". Feeling dissatisfied with his mortal life, Wukong decided to go and learn Taoism to achieve 72 magical powers. Later on, he went to the Afterlife, forced the deities to erase all the monkeys' names to make them immortal.