Suggestions by @georgerichard

Joonas Suotamo

as Lowbacca in Star Wars

Score: +1

Ian Whyte

as Chewbacca in Star Wars

Score: +1

Ian McDiarmid

as Supreme Leader Snoke in Star Wars

Score: +1

Andy Serkis

as Saba Sebatyne in Star Wars

Score: +1

Sam Claflin

as Kyp Durron in Star Wars

Score: +1

Artt Butler

as Admiral Ackbar in Star Wars

Score: +2

Keanu Reeves

as Darth Revan in Star Wars

Score: 0

James Earl Jones

as Darth Vader in Star Wars

Score: +1

Michelle Pfeiffer

as Admiral Natasi Daala in Star Wars

Score: +2

William Hurt

as Admiral Gilad Pellaeon in Star Wars

Score: +1

Luke Evans

as Kyp Durron in Star Wars

Score: +1

Dominic Cooper

as Corran Horn in Star Wars

Score: +1

Dominic Cooper

as Kyp Durron in Star Wars

Score: -1

Billie Lourd

as Nelani Dinn in Star Wars

Score: +1

Chris Evans

as Jacen Solo in Star Wars: Legacy of the Force

Score: +1

Tommy Lee Jones

as Thrackan Sal-Solo in Star Wars

Score: +1

Shailene Woodley

as Syal Antilles in Star Wars

Score: +1

Denis Lawson

as Wedge Antilles in Star Wars

Score: +1

Cate Blanchett

as Lady Lumiya in Star Wars

Score: +1

Tom Hardy

as Darth Bane in Star Wars

Score: +1