Suggestions by @floydylan

Paul Dano

as The Riddler in The Batman: Arkham Asylum (2019)

Score: +1

Jeffrey Wright

as Commissioner James Gordon in The Batman: Arkham Asylum (2019)

Score: +1

Barry Keoghan

as The Joker in The Batman: Arkham Asylum (2019)

Score: +1

Robert Pattinson

as The Batman in The Batman: Arkham Asylum (2019)

Score: +1

Phil Collins

as Mr. Freeze in Batman Characters but only cast musicians

Score: +1

David Bowie

as Riddler in Batman Characters but only cast musicians

Score: +2

Joe Walsh

as Scarecrow in Batman Characters but only cast musicians

Score: +1

David Lee Roth

as Joker in Batman Characters but only cast musicians

Score: 0

Joe Pesci

as Joe Barbaro in Per Aspera Ad Astra (1980)

Score: +2

Robert De Niro

as Vito Scaletta in Per Aspera Ad Astra (1980)

Score: 0

Martin Scorsese

as Director in Crème de la Crème (1974)

Score: +1

Lee Van Cleef

as Sergio Morello in Crème de la Crème (1974)

Score: +1

Bo Hopkins

as Lucas Bertone in Crème de la Crème (1974)

Score: +1

Robert Shaw

as Detective Norman in Crème de la Crème (1974)

Score: +1

Peter Boyle

as Vincenzo Ricci in Crème de la Crème (1974)

Score: +1

Cesare Danova

as Don Morello in Crème de la Crème (1974)

Score: 0

John Marley

as Luigi in Crème de la Crème (1974)

Score: 0

Frederic Forrest

as Vincenzo Ricci in Crème de la Crème (1974)

Score: -2

Brad Dourif

as Ralph in Crème de la Crème (1974)

Score: +1