Stanisław Lem's play Faithful Robot has had three film adaptations to date — a 1965 one from the Soviet Union (directed by Ivan Rassomakhin), a 1967 one from Czechoslovakia (directed by Jan Matějovský), and a 1977 one from East Germany (directed by Jens-Peter Proll).
Tropes specific to the 1965 Soviet adaptation:
- Adaptational Badass: Not only does Graumer consult Klempner on his writing, but he also outright writes drafts for him.
- Adaptational Context Change: In the play, Graumer's ability to repair himself is apparently just one of the many perks of his advanced programming. Here, it's revealed he learned to repair himself due to his owners constantly damaging him.
- Adaptational Jerkass: Klempner has an affair with Mrs. Donnel practically under her husband's nose. In the play, there is nothing to suggest it.
- Adaptational Sympathy: In the play, Graumer longs to create a perfect human in good part due to ambition. Here, it's due to the years of abuse by previous owners.
- Adaptational Wimp: Klempner concerning his writing talent. In the play, the first book he writes during the plot (the one where he replaces potassium cyanide with aconite on Graumer's advice) isn't said to have anything wrong with it, and it's implied it got accepted. Here, Gordon is completely unsatisfied with the entire second half and orders Klempner to do a rewrite.
- Death by Adaptation: Unlike in the original where Klempner and the Guy face Uncertain Doom, here we see them getting poisoned.
- I Cannot Self-Terminate: Graumer considers suicide, but his construction is too well-protected for that.
- Mean Boss: Graumer's bosses beat him up and generally treat him as an object. It gets even worse once one of them implants the ability to feel emotions into Graumer.
- Promoted to Love Interest: Klempner has an affair with Mrs. Donnel, while nothing hints on it in the play.
- Sympathetic Murderer: Graumer poisons both Klempner and the Strange Guy. While in the play it's more ambiguous which side of the conflict is more unpleasant, here we are clearly meant to sympathize with Graumer, since his hatred of humanity stems from years of abuse and cruel experimentation he endured from his previous owners.
- You Are Already Dead: We see Klempner and the Guy drink a fatal dose of poison, though we never see it take effect.
