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
Forbidden Planet using the great machine as companions ("pets") for his daughter and only outwardly resemble their Earth counterparts. Since the Krell's Great Machine can project matter "in any form" it has the power to create life. Thus, the Krell's self-destruction can be interpreted by the reader as a cosmic punishment for misappropriating the life-creating power of the universe. This is why Commander Adams says in his speech to Altaira "... we are, after all, not God". "Forbidden Planet"s innovative electronic music score, credited as "electronic tonalities", partly to avoid having to pay any of the film industry music guild fees, was