Suggestions by @jacobking1
474 suggestions
Martin Landau
as William L. Borden in Oppenheimer in Classic Hollywood (1960s)
Richard Burton
as Sirius Black in Harry Potter Series in Classic Hollywood (1950s) [British Actors]
Alec Guinness
as Remus Lupin in Harry Potter Series in Classic Hollywood (1950s) [British Actors]
Flora Robson
as Dolores Umbridge in Harry Potter Series in Classic Hollywood (1950s) [British Actors]
Edith Evans
as Minerva McGonagall in Harry Potter Series in Classic Hollywood (1950s) [British Actors]
James Mason
as Lucius Malfoy in Harry Potter Series in Classic Hollywood (1950s) [British Actors]
Christopher Lee
as Severus Snape in Harry Potter Series in Classic Hollywood (1950s) [British Actors]
Peter Cushing
as Garrick Olivander in Harry Potter Series in Classic Hollywood (1950s) [British Actors]
Tommy Cooper
as Nearly-Headless Nick in Harry Potter Series in Classic Hollywood (1950s) [British Actors]
Michael Hordern
as Rubeus Hagrid in Harry Potter Series in Classic Hollywood (1950s) [British Actors]
John Gielgud
as Albus Dumbledore in Harry Potter Series in Classic Hollywood (1950s) [British Actors]
Hayley Mills
as Hermione Granger in Harry Potter Series in Classic Hollywood (1950s) [British Actors]
Alastair Sim
as Argus Filch in Harry Potter Series in Classic Hollywood (1950s) [British Actors]
Peter Ustinov
as Gilderoy Lockhart in Harry Potter Series in Classic Hollywood (1950s) [British Actors]
Vivien Leigh
as Bellatrix Lestrange in Harry Potter Series in Classic Hollywood (1950s) [British Actors]
Laurence Olivier
as Voldemort in Harry Potter Series in Classic Hollywood (1950s) [British Actors]
Robert Bolt
as Writer in Oppenheimer in Classic Hollywood (1960s)
Michael Hordern
as Patrick Blackett in Oppenheimer in Classic Hollywood (1960s)
Maximilian Schell
as Frederick Zoller in Inglourious Basterds in Classic Hollywood (1950s)
Ian Wolfe
as Albert Einstein in Oppenheimer in Classic Hollywood (1960s)