Most Twilight Zone fans know that Robby the Robot, the beloved 1950s sci-fi icon who first appeared in the feature film Forbidden Planet, popped up on the show several times throughout its run.

One of the most prevalent themes in Rod Serling's The Twilight Zone is sci-fi; episodes like "Third From the Sun " are ...

Robby the Robot — the robot from the 1956 movie ... TV shows including Lost in Space and several episodes of the Twilight Zone. He even made a motionless cameo on The Big Bang Theory.