Sir Ian Murray McKellen, CH, CBE (born 25 May 1939) is an English actor known for his work in the theatre, as well as modern film such as The Lord of the Rings and The Hobbit trilogies and in the X-Men films. He is the recipient of six Laurence Olivier Awards, a Tony Award, a Golden Globe Award, a Screen Actors Guild Award, a BIF Award, two Saturn Awards, four Drama Desk Awards, and two Critics' Choice Awards. He has also received two Oscar nominations, four BAFTA nominations and five Emmy Award nominations.

Sir Ian provides the voice of Dr. Cecil Pritchfield in "Send in Stewie, Please".