Suggestions by @nicholasoleksak

Jonathan Rhys Meyers

as Galen in Assassin's Apprentice (Farseer Trilogy)

Score: -2

Liam Neeson

as Chade in Assassin's Apprentice (Farseer Trilogy)

Score: -7

David Mazouz

as Allik in Mistborn Era 2

Score: +5

Morena Baccarin

as Telsin Ladrian in Mistborn Era 2

Score: +9

Emily Blunt

as Bleeder in Mistborn Era 2

Score: -2

Adria Arjona

as MeLaan in Mistborn Era 2

Score: 0

Patrick Dempsey

as Replar Innate in Mistborn Era 2

Score: +2

David Wenham

as Claude Aradel in Mistborn Era 2

Score: +4

Andy Garcia

as Edward Ladrian in Mistborn Era 2

Score: +5

Jonathan Rhys Meyers

as Miles Dagouter in Mistborn Era 2

Score: +4

Naomi Scott

as Marasi Colms in Mistborn Era 2

Score: -2

Lucy Boynton

as Steris Harms in Mistborn Era 2

Score: +6

Annabelle Wallis

as Steris Harms in Mistborn Era 2

Score: +17

Ana de Armas

as Marasi Colms in Mistborn Era 2

Score: 0

Scarlett Johansson

as Steris Harms in Mistborn Era 2

Score: -14

Emily Blunt

as Lessie in Mistborn Era 2

Score: -1

Robert Pattinson

as Wayne in Mistborn Era 2

Score: -11

Oscar Isaac

as Waxillium Ladrian in Mistborn Era 2

Score: -7

Sofia Boutella

as Jewels in Warbreaker

Score: 0

Theo James

as Denth in Warbreaker

Score: 0