Robot (Lost in Space) arms. The Robot was performed by Bob May in a prop costume built by Bob Stewart. The voice was primarily dubbed by Dick Tufeld, who was also the series' narrator, and Jorge Arvizu for the Spanish dubbing. The Robot was designed by Robert Kinoshita, who also designed "Forbidden Planet"'s Robby the Robot. Robby appears in Lost in Space episode #20 "War of the Robots" and in episode #60 "Condemned of Space". The Robot did not appear in the unaired pilot episode, but was added to the series once it had been greenlit. Initially, the bellows-covered legs were articulated, and were
The Mysterious Planet sufficient to call for the end of the Doctor's life. As shown by the court evidence, the Doctor and Peri land on Ravolox, both noting a similarity to Earth. The Doctor is aware that Ravolox was devastated by a fireball, according to official records, but the presence of flourishing plant life make him suspicious. As they walk, they are observed by Sabalom Glitz and Dibber, mercenaries on the planet attempting to destroy a "black light" generator in order to destroy the L3 robot deep underground that it powers. The Doctor and Peri find a tunnel and enter to find remains