Suggestions by @averyburner

Martin Scorsese

as Professor Sprout in Harry Potter (HBO Max Series)

Robert De Niro

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

Reba McEntire

as Professor Snape in Harry Potter (HBO Max Series)

Zendaya

as Argus Filch in Harry Potter (HBO Max Series)

Anne Hathaway

as The Sorting Hat in Harry Potter (HBO Max Series)

Austin Butler

as Peeves the Poltergeist in Harry Potter (HBO Max Series)

Jennifer Coolidge

as The Bloody Baron in Harry Potter (HBO Max Series)

J.K. Rowling

as The Fat Friar in Harry Potter (HBO Max Series)

Timothée Chalamet

as Nearly Headless Nick in Harry Potter (HBO Max Series)

Delia Smith

as Trolley Witch in Harry Potter (HBO Max Series)

Sadie Sink

as Molly Weasley in Harry Potter (HBO Max Series)

Angelina Jolie

as Garrick Olivander in Harry Potter (HBO Max Series)

Danny DeVito

as Madame Malkin in Harry Potter (HBO Max Series)

Skai Jackson

as Mrs. Figg in Harry Potter (HBO Max Series)

Jenna Ortega

as Griphook in Harry Potter (HBO Max Series)

Karen Gillan

as Bogrod in Harry Potter (HBO Max Series)

Dwayne Johnson

as Professor Quirrell in Harry Potter (HBO Max Series)

Zendaya

as Sturgis Podmore in Harry Potter (HBO Max Series)

Megan Fox

as Tom the Innkeeper in Harry Potter (HBO Max Series)

Margot Robbie

as Hagrid in Harry Potter (HBO Max Series)