Suggestions by @andrearaujo

Aisling Franciosi

as Helena Ravenclaw in Harry Potter

Score: +1

Gaspard Ulliel

as Morfin Gaunt in Harry Potter

Score: +1

Tom Hiddleston

as Xenophilius Lovegood in Harry Potter

Score: +1

Emily Watson

as Dolores Jane Umbridge in Harry Potter

Score: +1

James McAvoy

as Quirinus Quirrell in Harry Potter

Score: -1

Nicholas Hoult

as Quirinus Quirrell in Harry Potter

Score: -1

Eleanor Tomlinson

as Crimson Viper in Street Fighter

Score: +1

Bill Skarsgård

as Pennywise the Dancing Clown in Terrordrome

Score: +1

Olive Abercrombie

as Myrtle Warren in Harry Potter

Score: +1

Austin Butler

as Pinhead in Terrordrome

Score: +1

Joe Manganiello

as Ash Williams in Terrordrome

Score: +1

Chris O'Dowd

as Arthur Weasley in Harry Potter

Score: +1

Ed Harris

as Antioch Peverell in Harry Potter

Score: +1

Aidan Gillen

as Cadmus Peverell in Harry Potter

Score: +1

Cillian Murphy

as Ignotus Peverell in Harry Potter

Score: +1

Jeremy Irons

as Rufus Scrimgeour in Harry Potter

Score: +1

Asia Kate Dillon

as Alice Longbottom in Harry Potter

Score: +1

Kirsten Dunst

as Rita Skeeter in Harry Potter

Score: +1

Stellan Skarsgård

as Cornelius Fudge in Harry Potter

Score: +1

Mark Dacascos

as Mundungus Fletcher in Harry Potter

Score: +1