Robot B-9

The B-9, Class M-3 General Utility Non-Theorizing Environmental Control Robot was a character in the television series Lost in Space. Known and addressed simply as "Robot", his full designation was only occasionally mentioned on the show.

Full-size replicas of the robot are available commercially. Other versions have been built by hobbyists around the world, who have built at least 15 detailed full-size replicas of the Robot.