Because of the effort the Monkey King put into turning himself into The Great Sage, Equal of Heaven, it’s understandably annoying to be referred to merely as a disciple—but given that Tze-Yo-Tzuh promised the Monkey King to Wong Lai-Tsao, it’s reasonable to assume that an essential part of the Monkey King’s true identity is to be a helper to Wong Lai-Tsao. This makes the Monkey King’s personal quest even more difficult, as his pride makes it hard for him to accept not just that he’s a monkey, but that his purpose in life is to serve others.