Teddy Daniels is a character on the movie Shutter Island.
He is portrayed by Leonardo DiCaprio.
He came to Shutter Island with his partner Chuck to investigate about a patient that had escaped the mental hospital Ashecliffe. As the movie goes it turns out that everything about the patient that had escaped (Rachel Solando) was fake and that Teddy actually is the patient. And that Chuck isn't his sheriff partner, and instead Teddy's psychiatrist, Lester Sheehan. Dr. Cawley tells Teddy that his real name is Andrew Laeddis (that patient Teddy had asked people if they knew) and that he isn't a sheriff and the whole case was a part of a game and Teddy's fake reality. In the end Teddy had accepted the truth and made the decision himself to get lobotomized.