Daniel Betts
as Mickey Muldoon
Caroline Carver
as Princess Jessica
Colm Meaney
as Seamus Muldoon
Zoë Wanamaker
as Mary Muldoon
Roger Daltrey
as King Boric
Harriet Walter
as Queen Morag
Randy Quaid
as Jack Woods
Orla Brady
as Kathleen Fitzpatrick
Whoopi Goldberg
as The Grand Banshee
Phyllida Law
as Lady Margaret
Kevin McKidd
as Jericho O'Grady
Kieran Culkin
as Barney O'Grady
Stephen Moore
as Sir Aloysius Jantee
Tony Curran
as Sean Devine
Frank Finlay
as General Bulstrode
Jonathan Firth
as Count Grogan
Peter Serafinowicz
as George Fitzpatrick