Suggestions by @jordanwilliams1

Thomas F. Wilson

as Albus Dumbledore in Harry Potter (HBO Max Series)

Clancy Brown

as Albus Dumbledore in Harry Potter (HBO Max Series)

Phoebe Waller-Bridge

as Petunia Dursley in Harry Potter (HBO Max Series)

Hugh Skinner

as Vernon Dursley in Harry Potter (HBO Max Series)

Holly Earl

as The Grey Lady in Harry Potter (HBO Max Series)

Arielle Palik

as The Grey Lady in Harry Potter (HBO Max Series)

Richard Coyle

as Aberforth Dumbledore in Harry Potter (HBO Max Series)

Literally Nobody

as Cadmus Peverell in Harry Potter (HBO Max Series)

Literally Nobody

as Antioch Peverell in Harry Potter (HBO Max Series)

An Unknown Actress

as Bathilda Bagshot in Harry Potter (HBO Max Series)

Harry Collett

as Gellert Grindelwald (young) in Harry Potter (HBO Max Series)

Danny Dyer

as Albert Runcorn in Harry Potter (HBO Max Series)

Laurie Brett

as Mary Cattermole in Harry Potter (HBO Max Series)

Adam Woodyatt

as Reginald Cattermole in Harry Potter (HBO Max Series)

Donald Sumpter

as Horace Slughorn in Harry Potter (HBO Max Series)

Ed Sheeran

as Cousin Barny in Harry Potter (HBO Max Series)

Dave Bautista

as Jugson McNair in Harry Potter (HBO Max Series)

Jason Statham

as John Dawlish in Harry Potter (HBO Max Series)

Corey Stoll

as John Dawlish in Harry Potter (HBO Max Series)

An Unknown Actress

as Agusta Longbottom in Harry Potter (HBO Max Series)