Suggestions by @harrypotterfan7

Olivia Colman

as Professor Minerva McGonagall in Harry Potter

Helen Mirren

as Professor Minerva McGonagall in Harry Potter

Ewan McGregor

as Ludo Bagman in Harry Potter

Jade Weber

as Fleur Delacour in Harry Potter

Lily-Rose Depp

as Fleur Delacour in Harry Potter

Chris Hemsworth

as Gilderoy Lockhart in Harry Potter

Benedict Cumberbatch

as Severus Snape in Harry Potter

Jude Law

as Professor Albus Percival Wulfric Brian Dumbledore in Harry Potter

Eva Green

as Bellatrix Lestrange in Harry Potter

Emilia Clarke

as Bellatrix Lestrange in Harry Potter

Kate Winslet

as Rita Skeeter in Harry Potter

Natalie Dormer

as Narcissa Malfoy in Harry Potter

Rosie Huntington-Whiteley

as Narcissa Malfoy in Harry Potter

Vanessa Kirby

as Narcissa Malfoy in Harry Potter

Emily Blunt

as Narcissa Malfoy in Harry Potter

Naomi Watts

as Narcissa Malfoy in Harry Potter

Jamie Bell

as Peter Pettigrew in Harry Potter

Jordan Knight

as Voldemort (present time in the book) in Harry Potter

Letitia Wright

as Aurora Sinistra in Harry Potter

Anthony Daniels

as Cuthbert Binns in Harry Potter