Suggestions by @flynnchalmers
17 suggestions

Donald Trump
as Cornelius Fudge in Harry Potter (MAX Series Reboot)

Johnny Depp
as Sirius Black in Harry Potter (MAX Series Reboot)
Timothée Chalamet
as Stanley Shunpike in Harry Potter (MAX Series Reboot)
Wallace Shawn
as Ernest Prang in Harry Potter (MAX Series Reboot)

Finn Wolfhard
as Stanley Shunpike in Harry Potter (MAX Series Reboot)
Morgan Freeman
as Vernon Dursley's secretary in Harry Potter (MAX Series Reboot)
Jack Black
as Vernon Dursley in Harry Potter (MAX Series Reboot)
Wallace Shawn
as Aberforth Dumbledore in Harry Potter (MAX Series Reboot)
Wallace Shawn
as Horace Slughorn in Harry Potter (MAX Series Reboot)
Wallace Shawn
as Griphook in Harry Potter (MAX Series Reboot)

Jason Momoa
as Alastor Moody in Harry Potter (MAX Series Reboot)
Annie Potts
as Rolanda Hooch in Harry Potter (MAX Series Reboot)
Annie Potts
as Pomona Sprout in Harry Potter (MAX Series Reboot)
Annie Potts
as Augusta Longbottom in Harry Potter (MAX Series Reboot)
Jack Black
as Peeves in Harry Potter (MAX Series Reboot)

Michael Rosen
as Peeves in Harry Potter (MAX Series Reboot)
Rowan Atkinson
as Peeves in Harry Potter (MAX Series Reboot)