Suggestions by @chefner

James McAvoy

as Harry Potter in Harry Potter and the Cursed Child

Score: +1

Simon Pegg

as Harry Potter in Harry Potter and The Cursed Child

Score: -6

Jon Hamm

as Rudolf Hess in Hitler: The Nazi Circle

Score: +2

Karl Markovics

as Adolf Hitler in Hitler: The Nazi Circle

Score: +1

John Tormey

as Tony in Leon The Professional 2004

Score: +1

Barry Pepper

as Micah Bell in Red Dead Redemption 2 (RDR2)

Score: +1

Leonardo DiCaprio

as Arthur Morgan in Red Dead Redemption 2 (RDR2)

Score: +1

Jerry Orbach

as Jimmy McGill in Better Call Saul (1975 - 1982)

Score: +1

Jay Mohr

as Saul Goodman. in Breaking Bad.

Score: +1

John Gielgud

as Albus Dumbledore in Harry Potter And The Philosopher/Sorcerer's Stone (70's Cast)

Score: +1

Peter Cushing

as Severus Snape in Harry Potter And The Philosopher/Sorcerer's Stone (70's Cast)

Score: +4

Sacha Baron Cohen

as Sherlock Holmes in The Hound of the Baskervilles

Score: +1

Alan Alda

as Tom Manning in Hellboy II: The Golden Army (1988)

Score: +1

John Gielgud

as King Balor in Hellboy II: The Golden Army (1988)

Score: +1

Alan Arkin

as Chamberlain in Hellboy II: The Golden Army (1988)

Score: +1

Alan Arkin

as Tom Manning in Hellboy II: The Golden Army (1988)

Score: +1

Jeff Bridges

as Prince Nuada Silverlance in Hellboy II: The Golden Army (1988)

Score: +1

Michelle Pfeiffer

as Liz Sherman in Hellboy II: The Golden Army (1988)

Score: +1

Glynis Barber

as Princess Nuala: in Hellboy II: The Golden Army (1988)

Score: 0