Frankie Howerd

Lurcio

Patrick Cargill

Nero

Bill Fraser

Prosperus Maximus

Michael Hordern

Ludicrus Sextus

Barbara Murray

Ammonia

Lance Percival

Captain Bilius

Adrienne Posta

Scrubba

Bernard Bresslaw

Gorgo

Roy Hudd

Nero's M.C.

Julie Ege

Voluptua

Kenneth Cranham

Christian

Russell Hunter

Jailer

Royce Mills

Nausius

Hugh Paddick

Priest

Madeline Smith

Erotica

Ian Trigger

Odius

Rita Webb

Cassandra

Aubrey Woods

Villanus

Gaye Brown

Biggia

Veronica Clifford

Boobia

Barrie Gosney

Major Domo

Derek Griffiths

Steam Slave

Warwick Sims

Handsome Man

George Woodbridge

Fat Bather

Nicola Austin

Naked Woman (uncredited)

Minah Bird

Girl Bather (uncredited)

Richard Cordery

Centurian (uncredited)

Candace Glendenning

Stone Girl (uncredited)

Carol Hawkins

Nero's Girl (uncredited)

David Prowse

Muscular Man (uncredited)

Sheila Steafel

Voluptua (voice) (uncredited)