Suggestions by @kamil_drabik

Norman Reedus

as Typhus the Traveller in Warhammer 40K (Henry Cavil/Amazon)

Pierce Brosnan

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

Charles White Jr.

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

Timothy Chalamet

as Rincewind in Discworld

Mark Strong

as Alpharius/Omegon in Warhammer 40K (Henry Cavil/Amazon)

Jon Bernthal

as Kharn the Betrayer in Warhammer 40K (Henry Cavil/Amazon)

James Spader

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

Nicolas Hoult

as Iskandar Khayon in Warhammer 40K (Henry Cavil/Amazon)

Tom Hardy

as Kharn the Betrayer in Warhammer 40K (Henry Cavil/Amazon)

Joaquin Phoenix

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

Christian Bale

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

Christian Bale

as Magnus the Red in Warhammer 40K (Henry Cavil/Amazon)

Benedict Cumberbatch

as Ahzek Ahriman in Warhammer 40K (Henry Cavil/Amazon)

Vin Diesel

as Ghazghkull Mag Uruk Thraka in Warhammer 40K (Henry Cavil/Amazon)

Ben Kingsley

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

Kathy Bates

as Lady Sybil Ramkin in Discworld

Aaron Paul

as Iskandar Khayon in Warhammer 40K (Henry Cavil/Amazon)

Robert Pattinson

as Ahzek Ahriman in Warhammer 40K (Henry Cavil/Amazon)

Zendaya Coleman

as Ella Saturday in Discworld

Vinnie Jones

as Chrysoprase in Discworld