Channing Tatum

Marcus Aquila

Mark Strong

Guern

Jamie Bell

Esca

Donald Sutherland

Aquila

Denis O'Hare

Lotorius

Tahar Rahim

Seal Prince

Dakin Matthews

Claudius Marcellus

Douglas Henshall

Cradoc

Paul Ritter

Galba

Pip Carter

Servius Placidus

Ned Dennehy

Seal Chief / The Horned One

Zsolt László

Paulus

Julian Lewis Jones

Cassius

Brian Gleeson

Traveller #1

Jon Campling

Traveller #2

Granville Saxton

Patrician