Peter Ostrum
This actor only has one big project to his name. In 1971, he brought Charlie to life in Willy Wonka & The Chocolate Factory. He had only bee n12 years old the time but turned down the offer to work on more films in the franchise. Instead of acting, he decided to dedicate his life to animals. He earned his veterinary degree from Cornell University and now practices in Lowville, New York.
Jack Gleeson
Like Peter Ostrum, Jack Gleeson only has one huge role under his belt. This actor is infamous for playing the horrendous King Joffrey in the HBO hit show, Game of Thrones. Once his character got killed off, he retired from Hollywood to focus on his studies. He went to Trinity College in Dublin. He now owns a theater company known as Collapsing Horse, which he founded while he was still in university. Together with the co-owners, he was a member of a group called DU Players.