Sergei Vecheslov as Jim Ripl

Vladimir Gardin as Jack Ripl, his brother

Maria Volgina as Claire Ripl, his sister

Anna Chekulaeva as Mary Ripl, Jack's wife

Vasiliy Orlov as Charlie, worker

Sergei Martinson as Dizer, artist in the music hall

Serhii Minin as Tom, worker

Nikolai Rybnikov as Field Marshal

Pavel Poltoratskiy as Percy Grimm, minister

Vergiliy Renin as Hamilton Grimm

Nikolay Ablov as Rotterden, banker

Alexandra Khokhlova as Young lady with dolls

Daniil Vvedenskiy as (uncredited)

Nikolai Yarochkin as (uncredited)

Mikhail Doronin as Master (uncredited)

Vladimir Shnejderov as (uncredited)

Ivan Yudin as Engineer (uncredited)

Boris Shlikhting as Guest at the restaurant (uncredited)

Georgy Vsevolodov as (uncredited)

Ivan Lavrov as Butler in the polytechnical school (uncredited)

Nikolay Gorodnichev as First robot (uncredited)

Tatyana Rayt as (uncredited)