Top 20 Actors That Turned Down Incredibly Massive Roles

8. Ian McKellan – Dumbledore

After the death of Richard Harris, the Harry Potter franchise needed a new wizard. They turned to none other than Ian McKellan to take on the role. Even though it was obvious the Harry Potter movies were a huge success, Ian turned down the role. He had already played a wizard in a successful franchise (The Lord of the Rings trilogy) and did not want to do it again.