Suggestions by @tk421uk

Keanu Reeves

as Corvus Corax in Warhammer 40K (Henry Cavil/Amazon)

Score: +8

Rory McCann

as Ferrus Manus in Warhammer 40K (Henry Cavil/Amazon)

Score: +1

Gwendoline Christie

as Inquisitor Amberley Vail in Warhammer 40K (Henry Cavil/Amazon)

Score: +1

Nikolaj Coster-Waldau

as Roboute Guilliman in Warhammer 40K (Henry Cavil/Amazon)

Score: -1

Iain Glen

as Rogal Dorn in Warhammer 40K (Henry Cavil/Amazon)

Score: -2

Kristofer Hivju

as Leman Russ in Warhammer 40K (Henry Cavil/Amazon)

Score: +3

Game of Thrones Season 8

as Leman Russ in Warhammer 40K (Henry Cavil/Amazon)

Score: -5

Ian McKellen

as Malcador the Sigillite in Warhammer 40K (Henry Cavil/Amazon)

Score: +1

Patrick Stewart

as Malcador the Sigillite in Warhammer 40K (Henry Cavil/Amazon)

Score: +4

Luke Evans

as The Emperor of Mankind in Warhammer 40K (Henry Cavil/Amazon)

Score: -1

Charlie Hunnam

as Lion El'Jonson in Warhammer 40K (Henry Cavil/Amazon)

Score: 0

Josh Brolin

as Commissar Sebastian Yarrick in Warhammer 40K (Henry Cavil/Amazon)

Score: +2

Henry Cavill

as Commissar Ciaphas Cain in Warhammer 40K (Henry Cavil/Amazon)

Score: -2

Michael Fassbender

as The Question in DCEU Rebooted

Score: -2