Paul MescalLucius
Denzel WashingtonMacrinus
Pedro PascalGeneral Acacius
Connie NielsenLucilla
Joseph QuinnEmperor Geta
Fred HechingerEmperor Caracalla
Lior RazViggo
Derek JacobiGracchus
Peter MensahJugurtha
Matt LucasMaster of Ceremonies
Alexander KarimRavi
Yuval GonenArishat
Richard McCabeQuaestor
Tim McInnernySenator Thraex
Alec UtgoffDarius
Rory McCannGeneral Tegula
Yann GaelBostar
Riana DuceHyacinthia
Alfie TempestYoung Lucius
Amira GhazallaLeta | Lucilla's Servant
Abdelmoula Ait Sidi LhassanBoy (Numidia)
Mouaiz El OutmanyBoy (Numidia)
Brahim AssagourBoy (Numidia)
Alexander SimkinCenturion (Branding)
Richard KatzGovernor (Baboon Arena)
David GanlyMaster of Ceremonies (Baboon Arena)
Anton SalibaPraetorian (Lucilla's)
Amal AyouchNoble Bedouin Woman
Hadrian HowardAgedilios
Chidi AjufoGladiator
Lee CharlesSlovak
Christopher Edward HallawaysGlyceo
Chi Lewis-ParryPhoebus
Ángel Gómez De La TorreGnaeus
Brahim Ait Ben AzzouzCenturion (Lucius' Arrest)
Maxime Rauf RuijselaarCenturion (Ostia)
Sana El BaghdadyWailing Woman
Nadia El MasnaouiWailing Woman
Nisrine MachatWailing Woman
Maud OulhenFemale Concubine
Estelle CourretFemale Concubine
Line AncelFemale Concubine
Sixtine GignouxFemale Concubine
Igor BadnjarMale Concubine
Romi DebartMale Concubine
Arnaud PréchacMale Concubine
Tom MoutchiBrennos
Dean FaganDorso
May CalamawyMacrinus' Companion (uncredited)