Jeremy Piven

as Narrator (voice)

Daniel Radcliffe

as Self

Rupert Grint

as Self

Emma Watson

as Self

Chris Columbus

as Self

Alfonso Cuarón

as Self

Tom Felton

as Self

J.K. Rowling

as Self

Gary Oldman

as Self

David Heyman

as Self

Richard Harris

as Self

Maggie Smith

as Self

Robbie Coltrane

as Self

John Cleese

as Self

Alan Rickman

as Self

Ian Hart

as Self

Stuart Craig

as Self

Kenneth Branagh

as Self

Jason Isaacs

as Self

Mark Radcliffe

as Self

Michael Gambon

as Self

David Thewlis

as Self