Suggestions by @culturedblerd

Nathan Jones

as Killer Croc in The Dark Knight

Score: +1

Clive Owen

as Hush in The Dark Knight

Score: +1

Mads Mikkelsen

as Prof. Hugo Strange in The Dark Knight

Score: +1

Andrew Dunbar

as Firefly in The Dark Knight

Score: +1

Stephen Lang

as Deathstroke in The Dark Knight

Score: +1

Guy Pearce

as Cluemaster in The Dark Knight

Score: +1

Big Show

as Clayface in The Dark Knight

Score: +1

Alan Blumenfeld

as Calender Man in The Dark Knight

Score: +1

Jon Bernthal

as Black Mask in The Dark Knight

Score: +1

Willem Dafoe

as The Joker in The Dark Knight

Score: +3

Jessica Chastain

as Poison Ivy in The Dark Knight

Score: +1

Common

as Detective Crispus Allen in The Dark Knight

Score: +1

America Ferrera

as Detective Renee Montoya in The Dark Knight

Score: +2

Donal Logue

as Detective Harvey Bullock in The Dark Knight

Score: +1

James Remar

as Commissioner James Gordon in The Dark Knight

Score: +1

Keira Knightley

as Julia Pennyworth in The Dark Knight

Score: +5

Bill Nighy

as Alfred Pennyworth in The Dark Knight

Score: 0

Jessica De Gouw

as Huntress in The Dark Knight

Score: +1

Michael B. Jordan

as Batwing in The Dark Knight

Score: +2

Dennis Haysbert

as Lucius Fox in The Dark Knight

Score: +1