Luke's mentor is a two-part answer, Yoda and Obiwan. Yoda is a fictional character from the Star Wars franchise, first appearing in the 1980 film The Empire Strikes Back. He is a small, green, ancient Jedi Master who trained Luke Skywalker in the ways of the Force. Obiwan Kenobi is another fictional character from the Star Wars franchise, first appearing in the 1977 film A New Hope. He is an old Jedi Knight who trained Luke in the ways of the Force and served as a mentor to him.