Suggestions by @thefancaster

Harrison Ford

as General Sanford "Sandy" Smithers in The Hateful Eight

Benjamin Archer

as Kevin Murphy in F is for Family

Sebastian Maniscalco

as Cosmo Kramer in Seinfeld Reboot

Benjamin Archer

as Clarence Wendle in Clarence: All Grown Up

Benjamin Archer

as Clarence Wendle in Clarence

Simon Pegg

as Peeves the Poltergeist in Harry Potter (Netflix show)

Rowan Atkinson

as Nearly-Headless Nick in Harry Potter (Netflix show)

Rhys Ifans

as Argus Filch in Harry Potter (Netflix show)

Bill Nighy

as Garrick Olivander in Harry Potter (Netflix show)

Logan Belcher

as Dudley Dursley in Harry Potter (Netflix show)

Olivia Colman

as Petunia Dursley in Harry Potter (Netflix show)

Mark Addy

as Vernon Dursley in Harry Potter (Netflix show)

Harry McDermott

as Draco Malfoy in Harry Potter (Netflix show)

Nick Frost

as Rubeus Hagrid in Harry Potter (Netflix show)

Emma Thompson

as Minerva McGonagell in Harry Potter (Netflix show)

Andrew Scott

as Quirinus Quirrell in Harry Potter (Netflix show)

Michael Caine

as Albus Dumbledore in Harry Potter (Netflix show)

Adam Driver

as Severus Snape in Harry Potter (Netflix show)

Pixie Davies

as Hermione Granger in Harry Potter (Netflix show)

Patrick Holland

as Ron Weasley in Harry Potter (Netflix show)