Paul Mescal

Lucius

Denzel Washington

Macrinus

Pedro Pascal

General Acacius

Connie Nielsen

Lucilla

Joseph Quinn

Emperor Geta

Fred Hechinger

Emperor Caracalla

Lior Raz

Viggo

Derek Jacobi

Gracchus

Peter Mensah

Jugurtha

Matt Lucas

Master of Ceremonies

Alexander Karim

Ravi

Yuval Gonen

Arishat

Richard McCabe

Quaestor

Tim McInnerny

Senator Thraex

Alec Utgoff

Darius

Rory McCann

General Tegula

Yann Gael

Bostar

Riana Duce

Hyacinthia

Alfie Tempest

Young Lucius

Amira Ghazalla

Leta | Lucilla's Servant

Abdelmoula Ait Sidi Lhassan

Boy (Numidia)

Mouaiz El Outmany

Boy (Numidia)

Brahim Assagour

Boy (Numidia)

Alexander Simkin

Centurion (Branding)

Richard Katz

Governor (Baboon Arena)

David Ganly

Master of Ceremonies (Baboon Arena)

Anton Saliba

Praetorian (Lucilla's)

Amal Ayouch

Noble Bedouin Woman

Hadrian Howard

Agedilios

Chidi Ajufo

Gladiator

Lee Charles

Slovak

Christopher Edward Hallaways

Glyceo

Chi Lewis-Parry

Phoebus

Ángel Gómez De La Torre

Gnaeus

Brahim Ait Ben Azzouz

Centurion (Lucius' Arrest)

Maxime Rauf Ruijselaar

Centurion (Ostia)

Sana El Baghdady

Wailing Woman

Nadia El Masnaoui

Wailing Woman

Nisrine Machat

Wailing Woman

Maud Oulhen

Female Concubine

Estelle Courret

Female Concubine

Line Ancel

Female Concubine

Sixtine Gignoux

Female Concubine

Igor Badnjar

Male Concubine

Romi Debart

Male Concubine

Arnaud Préchac

Male Concubine

Tom Moutchi

Brennos

Dean Fagan

Dorso

May Calamawy

Macrinus' Companion (uncredited)

Chris Hallaways

Glyceo (as Christopher Edward Hallaways)