Suggestions by @nandoperaza

Christian Bale

as Voldemort in A more diverse Harry Potter

Benedict Cumberbatch

as Voldemort in A more diverse Harry Potter

Adam Driver

as Severus Snape in A more diverse Harry Potter

Ricky Martin

as Gilderoy Lockhart in A more diverse Harry Potter

Lena Dunham

as Dolores Umbridge in A more diverse Harry Potter

Angela Bassett

as Minerva McGonagall in A more diverse Harry Potter

Morgan Freeman

as Albus Dumbledore in A more diverse Harry Potter