Suggestions by @davidstevens

Richard O'Brien

as Malbeth the Seer in Tolkien

Score: +1

Doug Jones

as Erestor in Tolkien

Score: +1

Peter Cullen

as Drogoth the Dragon Lord in Tolkien

Score: +1

Mark Addy

as Forlong the Fat in Tolkien

Score: +1

Roman Griffin Davis

as Minto Burrows in Tolkien

Score: +1

Peter Davison

as Mr. Justice Millhouse in Whose Life is it Anyway?

Score: +1

Richard Roxburgh

as Ranger Ken in Ty the Tasmanian Tiger

Score: +1

Stephen Graham

as Hadhod in Tolkien

Score: +3

Ralph Ineson

as Balfor in Tolkien

Score: +1

Martin Compston

as Beregond in Tolkien

Score: +1

Florence Hunt

as Angelica Baggins in Tolkien

Score: +1

Leila Farzad

as Yasmine in Hero Wars (2027)

Score: +1

Kate Beckinsale

as Arachne in Hero Wars (2027)

Score: +1

Amy Manson

as Ginger in Hero Wars (2027)

Score: +1

Yuan Bingyan

as Qing Mao in Hero Wars (2027)

Score: +1

John Rhys-Davies

as Cornelius in Hero Wars (2027)

Score: +1

Lupita Nyong'o

as Oya in Hero Wars (2027)

Score: +1

Jeremy Irons

as Arngeir in The Elder Scrolls: Skyrim

Score: +2

Tom Waits

as Alduin in The Elder Scrolls: Skyrim

Score: -1

Keith David

as Alduin in The Elder Scrolls: Skyrim

Score: +4