Robby's design and construction, from materials including metal, plastic, rubber,
wood, glass and Plexiglas, cost MGM around $125,000.
Robby's unusual robot design included sphere-like arms, legs, and dome, all made of acetate.
Robby's front neon tubes blink, which gave the robot the appearance of talking, and Robby runs on five 12 volt DC motors and can be controlled with a remote attached by a cable.
After "retiring" from film and TV, the famous prop found a home with various collectors until he was ultimately bought and restored by filmmaker and collector Bill Malone.
This original Robby that's up for auction is fully operational and is expected to sell for seven figures.Robby the Robot made his first big-screen appearance in the 1956 Metro-Goldwyn-Mayer film "Forbidden Planet," a sci-fi take on Shakespeare's "The Tempest."
Robby played the mechanical servant created by a scientist named Dr. Morbius, who programs the robot using knowledge of the Krell, a race of highly intelligent beings that once populated the planet Altair IV, where the movie takes place. https://www.cnet.com/news/robby-the-robot-movie-prop-auction-forbidden-planet/
