Robby the Robot robot designed to care for children. In "Tom Swift on The Phantom Satellite" (1956), it is also the name given to a small four-foot robot designed by Tom Swift Jr., the boy inventor in the "Tom Swift Jr." science fiction novel series by Victor Appleton II. Robby the Robot originated as a character in the 1956 MGM science fiction film "Forbidden Planet". The story centers on a crew of space explorers from Earth who land their starship, the C57-D, on the planet Altair IV, ruled by the mysterious Dr. Morbius. Robby is a mechanical servant that Morbius has designed, built,
Planet of the Apes of the Apes: The Forbidden Zone". Malibu also published two one-shot comics, "A Day on the Planet of the Apes" and "Planet of the Apes: Sins of the Fathers", a prequel story to the original film; a trade paperback collecting the first four issues of the main series, titled "Monkey Planet"; and reissues of stories from Marvel's earlier "Apes" series. Gold Key Comics, Dark Horse Comics, and Boom! Studios have also produced "Planet of the Apes" comic books. The Boom! releases include crossovers with other properties: 2014's "" and 2017's King Kong story "Kong on the Planet of the Apes."