Prologus/Pseudolus: (baritone or alto) A member of the acting troupe who introduces the play and then portrays Pseudolus, a sly and scheming slave owned by Hero. He will do anything to win his freedom and that desire fuels the action of the play. Casting is open to both male and female actors.

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Hysterium: (baritone) The nervous and anxious chief slave who works in the same house as Pseudolus. He wants to please his masters, but finds himself drawn into bad behavior by Pseudolus and fretting when everything goes wrong.

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Senex: (baritone) Father of Hero and the perennially henpecked and weary husband, married to a shrewish and demanding wife.

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Hero: (tenor) The handsome son of Senex and Domina; a lovesick young man who enters into a plan with his slave Pseudolus to win the hand of his beloved Philia.

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Lycus: (baritone or alto) The owner of the local brothel, Lycus is a shrewd dealmaker who is always out to make a buck. Casting is open to both male and female actors.

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Erronius: (baritone or tenor) A befuddled old man who is partially blind and always confused. He spends most of the play looking for his children who were kidnapped by pirates.

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Miles Gloriosus: (baritone or bass) A roman soldier who is handsome, strong, and pompous and completely in love with himself.

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Philia: (soprano) The girl Hero loves. She is young, beautiful, sweet and completely brainless. She has been sold to Miles Gloriosus, but yearns to be with Hero.

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Domina: (mezzo soprano or alto) The overbearing and shrewish wife of Senex, she has spent her life domineering her husband and smothering her son.

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Courtesans: (various vocal parts) Women of the House of Marcus Lycus

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Proteans: (various vocal parts) Featured roles that appear throughout the show as various characters. Casting open to both male and female actors.