2. Robby the Robot ('Forbidden Planet')
Basic Function: To assist his creator, Dr. Edward Morbius, while he's stranded on the distant planet Altair IV in the 23rd century.
Good or Bad: He obeys Isaac Asimov’s Three Laws of Robotics, which means that he cannot harm humans. That should make him good, but it had severe consequences when Robby stays faithful to an evil incarnation of Morbius.
Boldest Action: Somehow finding his way from Altair IV to appearances on The Addams Family, The Many Loves of Dobie Gillis and multiple episodes of The Twilight Zone.