Maria Vinogradova
— Kolya (voice)
Ольга Громова
— Olya (voice)
Алексей Грибов
— Archimedes (voice)
Евгений Весник
— Greek army commander (voice)
Тамара Дмитриева
— Lyre boy (voice)
Анатолий Папанов
— Roman centurion (voice)
Юрий Андреев
— Greek warriors (voice)
Степан Бубнов
— Marcus Claudius Marcellus / Old greek warrior (voice, uncredited)