Robotoid

A Robotoid is a sapient robotic creature engineered by an alien civilization. According to the Robot, a Robotoid is distinct from a Robot in that the latter is bound to follow its programming, whereas a Robotoid can make choices.

History
A deactivated Robotoid was found and repaired by the Jupiter 2 crewmembers on the planet Priplanus in 1998. It proved itself useful at first, but was secretly plotting to contact its masters to let them come to the planet and take over. The Robotoid was defeated by the Robot.

Appearances

 * Lost in Space, s01e20, "War of the Robots" (1966)