Suggestions by @devin

Bonnie Wright

as Lilly Potter in Harry Potter

Daniel Radcliffe

as James Potter in Harry Potter

Jason Mewes

as Lucius Malfoy in Harry Potter

Lucas Till

as Lucius Malfoy in Harry Potter

Johnny Depp

as Grindelwald in Harry Potter

Eva Green

as Bellatrix Lestrange in Harry Potter

Eva Green

as Bellatrix Lestrange in Harry Potter

Elle Fanning

as Fleur Delacour in Harry Potter

David Dastmalchian

as Barty Crouch Jr in Harry Potter

Jessica Lange

as Minerva McGonagall in Harry Potter

Gérard Depardieu

as Albus Dumbledore in Harry Potter

Tony Ramos

as Albus Dumbledore in Harry Potter

Maddie Ziegler

as Lavender Brown in Harry Potter

Avantika

as Padma Patil in Harry Potter

Maitreyi Ramakrishnan

as Parvati Patil in Harry Potter

Isaiah Russell-Bailey

as Dean Thomas in Harry Potter

Evan Alex

as Dean Thomas in Harry Potter

Owen Vaccaro

as Seamus Finnigan in Harry Potter

Milo Manheim

as Fred Weasley in Harry Potter

Milo Manheim

as George Weasley in Harry Potter