Suggestions by @harrypotterfan7

Nicola Stephenson

as Petunia Dursley (née Evans) in Harry Potter

Amanda Abbington

as Petunia Dursley (née Evans) in Harry Potter

Jamie Campbell Bower

as Bartemius Crouch Junior in Harry Potter

Mark Strong

as Bartemius Crouch Senior in Harry Potter

Adrian Scarborough

as Mundungus Fletcher in Harry Potter

Danny Dyer

as Mundungus Fletcher in Harry Potter

Rhys Ifans

as Mundungus Fletcher in Harry Potter

Tom Hopper

as Rabastan Lestrange in Harry Potter

Tom Mison

as Rabastan Lestrange in Harry Potter

Stephen Merchant

as Rabastan Lestrange in Harry Potter

Sam Claflin

as Rodolphus Lestrange in Harry Potter

Adil Ray

as Ted in Harry Potter

Sophie Raworth

as Ted in Harry Potter

Matt Berry

as Vernon Dursley in Harry Potter

Aaron Taylor-Johnson

as James Potter I in Harry Potter

Christian Bale

as Alastor Moody in Harry Potter

Rowan Atkinson

as Sir Nicholas De Mimsy-Porpington in Harry Potter

Emily Watson

as Molly Weasley in Harry Potter

Emily Atack

as Molly Weasley in Harry Potter

Katie McGrath

as Bellatrix Lestrange in Harry Potter