Suggestions by @coryreynolds

Cole Sprouse

as Tim Drake in Batman

Score: -1

Camila Mendes

as Selina Kyle in Batman

Score: -1

Leonardo DiCaprio

as Harvey Dent in Batman

Score: 0

Kunal Nayyar

as Ra´s a Ghul in Batman

Score: -2

Tobey Maguire

as Dick Grayson in Batman

Score: -4

Madelaine Petsch

as Poison Ivy in Batman

Score: 0

Stephen Amell

as Green Arrow in Batman

Score: 0

Tim Allen

as Mr. Freeze in Batman

Score: -1

Dwayne Johnson

as Bane in Batman

Score: -1

Tom Kenny

as Penguin in Batman

Score: +1

Peter Capaldi

as Alfred in Batman

Score: +1

Dove Cameron

as Barbara Gordon in Batman

Score: 0

Freddie Highmore

as Bruce Wayne in Batman

Score: -2

Kristen Bell

as Harley Quinn in Batman

Score: -2

Jim Carrey

as Joker in Batman

Score: -1