Suggestions by @anshpal

Jon Bernthal

as Perturabo in Warhammer 40K (Henry Cavil/Amazon)

David Bradley

as Fabius Bile in Warhammer 40K (Henry Cavil/Amazon)

Rory McCann

as Abaddon the Despoiler in Warhammer 40K (Henry Cavil/Amazon)

Riz Ahmed

as Lorgar in Warhammer 40K (Henry Cavil/Amazon)

Alan Ritchson

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

Ewan Mitchell

as Konrad Curze in Warhammer 40K (Henry Cavil/Amazon)

Ian McShane

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

Ewan Mitchell

as Konrad Curze in Warhammer 40000: Horus Heresy

Ryan Hurst

as Lhorke in Warhammer 40000: Horus Heresy

Ryan Hurst

as Khârn the Betrayer in Warhammer 40000: Horus Heresy

Ryan Hurst

as Argal Tal in Warhammer 40000: Horus Heresy

Kit Harington

as Corvus Corax in Warhammer 40000: Horus Heresy

Riz Ahmed

as Lorgar Aurelian in Warhammer 40000: Horus Heresy

Andy Serkis

as Angron in Warhammer 40000: Horus Heresy