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
Planet of the Dead the theme of Easter was not emphasised in the story; the episode only contained a "fleeting mention" of the holiday instead of "robot bunnies carrying baskets full of deadly egg bombs". The episode's tone word—"joyous"—was influenced by Davies' realisation that "every story since 'The Fires of Pompeii' [had] a bittersweet quality" and his subsequent desire to avoid the recurring theme. The starting point for the story was Roberts' first novel "The Highest Science". Davies liked the image of a train on a desert planet and rewrote the train as a bus. Davies nevertheless emphasised it was not an "adaptation as