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Григорий Шпигель

Teacher from the future (voice)

Leonid Eremeev

Mustaches man (voice)

Анатолий Папанов

Street sweeper Ivan / Robot (voice, incredited)

Клара Румянова

Girl from the future (voice, uncredited)

Юрий Хржановский

Stone age people / Teacher from the past / Magician Now (voice, uncredited)