Michelle Forbes as Helena Cain

Stephanie Jacobsen as Kendra Shaw

Graham Beckel as Jack Fisk

Jamie Bamber as Cpt. Lee 'Apollo' Adama

Edward James Olmos as Admiral William Adama

Mary McDonnell as President Laura Roslin

Katee Sackhoff as Captain Kara 'Starbuck' Thrace

Tricia Helfer as Number Six / Gina Inviere

Ingrid Tesch as Mother

Grace Park as Lt. Sharon Valerii

James Callis as Dr. Gaius Baltar

Michael Hogan as Colonel Saul Tigh

Tahmoh Penikett as Lt. Karl 'Helo' Agathon

Michael Trucco as Samuel Anders

Alessandro Juliani as Lt. Felix Gaeta

Kandyse McClure as Petty Officer Anastasia Dualla

Aaron Douglas as Chief Galen Tyrol

Campbell Lane as Hybrid

Stefanie von Pfetten as Showboat

Eileen Pedde as Sgt. Mathias

Kyra Scott as Young Helena Cain

Chandra Berg as Little Lucy Cain

Emily Hirst as Child in Cage

Alyssa Minniss as Flower Girl

Peter Flemming as Helena's Father

Steve Bacic as Colonel Jurgen Belzen

Brad Dryborough as Hoshi

Fulvio Cecere as Lt. Alastair Thorne

Vincent Gale as Peter Laird

Peter Bryant as Frank Bruno

Víctor Ayala as Man in Cage #2

Ben Cotton as Terrified Man

John Heard as Commander Barry Garner (archive footage) (uncredited)