Suggestions by @moony

Ralph Fiennes

as Voldermort in Harry Potter And The Cursed Child

Robert Pattinson

as Cedric Diggory in Harry Potter And The Cursed Child

Emma Watson

as Hermione Granger in Harry Potter And The Cursed Child

Arthur Bowen

as Albus potter in Harry Potter And The Cursed Child

Jonathan case

as Scorpius Malfoy in Harry Potter And The Cursed Child

Bonnie Wright

as Ginny Potter in Harry Potter And The Cursed Child

Imelda Staunton

as Dolores Umbridge in Harry Potter And The Cursed Child

Rupert Grint

as Ron Weasley in Harry Potter And The Cursed Child

Esther Smith

as Delfi Diggory in Harry Potter And The Cursed Child

Tom Felton

as Draco malfoy in Harry Potter And The Cursed Child

Adam Driver

as Severus Snape in Harry Potter And The Cursed Child

Keanu Reeves

as Severus Snape in Harry Potter And The Cursed Child

Daniel Radcliffe

as Harry Potter in Harry Potter And The Cursed Child