Suggestions by @averyburner

Toni Colette

as Moaning Myrtle in Harry Potter (HBO Max Series)

Kate Hudson

as Gilderoy Lockhart in Harry Potter (HBO Max Series)

Kate Beckinsale

as Mr. Borgin in Harry Potter (HBO Max Series)

Cara Delevingne

as Lucius Malfoy in Harry Potter (HBO Max Series)

Helen Mirren

as Arthur Weasley in Harry Potter (HBO Max Series)

Katya Zamolodchikova

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

Karen Fukuhara

as Mr. Mason in Harry Potter (HBO Max Series)

Judy Garland

as Dobby in Harry Potter (HBO Max Series)

Tim Allen

as Madame Pomfrey in Harry Potter (HBO Max Series)

Tim Allen

as Lord Voldemort in Harry Potter (HBO Max Series)

Spirit (Spirit)

as Firenze in Harry Potter (HBO Max Series)

Spirit (Spirit)

as Bane in Harry Potter (HBO Max Series)

Spirit (Spirit)

as Magorian in Harry Potter (HBO Max Series)

George Lopez

as Madame Pince in Harry Potter (HBO Max Series)

Lavagirl

as Lily Potter in Harry Potter (HBO Max Series)

Audrey Hepburn

as James Potter in Harry Potter (HBO Max Series)

Aubrey Plaza

as Professor Flitwick in Harry Potter (HBO Max Series)

Trixie Mattel

as Madame Hooch in Harry Potter (HBO Max Series)

Andrew Garfield

as Professor Sinistra in Harry Potter (HBO Max Series)

Dakota Fanning

as Professor Binns in Harry Potter (HBO Max Series)