Suggestions by @leonardo

Jodie Foster

as Professor Minerva MaCgonagall in Harry Potter

Score: +1

Helen Hunt

as Professor Minerva MaCgonagall in Harry Potter

Score: +1

Meryl Streep

as Professor Minerva MaCgonagall in Harry Potter

Score: +1

Stuart Townsend

as Professor Severus Snape in Harry Potter

Score: +3

Benedict Cumberbatch

as Professor Severus Snape in Harry Potter

Score: +2

Tom Hiddleston

as Professor Severus Snape in Harry Potter

Score: +2

Christoph Waltz

as Tom Marvolo Riddle/Lord Voldemort in Harry Potter

Score: +2

Thomas Kretschmann

as Tom Marvolo Riddle/Lord Voldemort in Harry Potter

Score: +2

Viggo Mortensen

as Tom Marvolo Riddle/Lord Voldemort in Harry Potter

Score: 0

Liam Neeson

as Professor and director Albus Dumbledore in Harry Potter

Score: +1

Derek Jacobi

as Professor and director Albus Dumbledore in Harry Potter

Score: +1

Ian McKellen

as Professor and director Albus Dumbledore in Harry Potter

Score: +1

Bernard Hill

as Professor and director Albus Dumbledore in Harry Potter

Score: +1

Richard Armitage

as Lord Henry Wotton in The Picture of Dorian Gray

Score: +1

Ewan McGregor

as Lord Henry Wotton in The Picture of Dorian Gray

Score: +1

Gabriella Wilde

as Sibyl Vane in The Picture of Dorian Gray

Score: +1

Chloë Grace Moretz

as Sibyl Vane in The Picture of Dorian Gray

Score: +1

Logan Lerman

as Dorian Gray in The Picture of Dorian Gray

Score: -2

Timothée Chalamet

as Dorian Gray in The Picture of Dorian Gray

Score: -1

Meryl Streep

as Stepmother in Cinderella (Musical)

Score: 0