Trivia

While shooting for the film in Mumbai, Russian President Dmitry Medvedev visited Yash Raj Studios, to watch Khan at work.

Jackie Chan was approached for a role in the film which was finally played by Tom Wu.

R&B singer Akon recorded two songs for the film.

The idea of making Ra.One originated while he was watching a commercial on TV six years ago. Sinha said, "The commercial dealt with two kids controlling a human with a remote. It was fascinating, and the visual stayed with me for some time." Sinha wrote a three-page short story based on the commercial, which he felt was good enough to be made into a film.

Amitabh Bachchan did the voice-over for the game intro in the film.