Eric Idle plays Brian Hope, one of the main characters who masquerades as a nun to escape the wrath of a gangster.
Robbie Coltrane portrays Charlie McManus, Brian's partner in crime who also takes on the role of a nun to avoid their pursuers.
Camille Coduri appears as Faith, a supporting character who gets entangled in the chaotic scheme orchestrated by Brian and Charlie.
Janet Suzman takes on the role of Sister Superior, the head of the convent where Brian and Charlie seek refuge.
Doris Hare plays Sister Mary of the Sacred Heart, a nun residing in the convent who becomes involved in the duo's antics.
Lila Kaye portrays Sister Mary of the Annunciation, another nun in the convent who is unaware of Brian and Charlie's true identities.
Robert Patterson appears as 'Case' Casey, a character connected to the criminal underworld who complicates Brian and Charlie's predicament.
Tom Hickey plays Father Seamus, a clergyman who interacts with the nuns and inadvertently becomes involved in the unfolding chaos.
Winston Dennis portrays Morley, a character linked to Brian and Charlie's criminal past who adds to the comedic confusion.
Ozzie Yue appears as Ernie Wong, a supporting character who encounters the disguised duo in the convent.
Robert Morgan takes on the role of Abbott, a figure associated with the operations of the convent and its inhabitants.
Colin Campbell appears as Norm, a character entangled in the comedic escapades of Brian and Charlie within the convent.
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