Peter Capaldi

as The Doctor

Alex Kingston

as River Song

Greg Davies

as King Hydroflax

Matt Lucas

as Nardole

Phillip Rhys

as Ramone

Rowan Polonski

as Flemming

Robert Curtis

as Scratch

Anthony Cozens

as Concierge

Chris Lew Kum Hoi

as Alphonse

Nicolle Smartt

as Receptionist

Liam Cook

as King Hydroflax's Body

Nonso Anozie

as Voice of Hydroflax (voice)

Clem So

as Starline Galactic Villain (uncredited)

William Hartnell

as The Doctor (1) (picture) (uncredited)

Patrick Troughton

as The Doctor (2) (picture) (uncredited)

Jon Pertwee

as The Doctor (3) (picture) (uncredited)

Tom Baker

as The Doctor (4) (picture) (uncredited)

Peter Davison

as The Doctor (5) (picture) (uncredited)

Colin Baker

as The Doctor (6) (picture) (uncredited)

Sylvester McCoy

as The Doctor (7) (picture) (uncredited)

Paul McGann

as The Doctor (8) (picture) (uncredited)

John Hurt

as The Doctor (War) (picture) (uncredited)

Christopher Eccleston

as The Doctor (9) (picture) (uncredited)

David Tennant

as The Doctor (10) (picture) (uncredited)

Matt Smith

as The Doctor (11) (picture) (uncredited)