The Invisible Boy

The Invisible Boy aka S.O.S Spaceship is a 1957 American science fiction film from MetroGoldwyn Mayer, produced by Nicholas Nayfack, directed by Herman Hoffman, and starring Richard Eyer and Philip Abbott. It is the second film appearance of Robby the Robot, the science fiction character who stole the show in Forbidden Planet 1956, also released by MetroGoldwynMayer. According to an implied, subtle back story in The Invisible Boy, the robot is the same character as that in Forbidden Planet, which is set in the 23rd century Robby is brought back to the films mid20th century era by time travel.

When Timmie expresses a wish to be able to play without being observed by his parents, Robby, with the aid of a supercomputer, makes him invisible. At first Timmie uses his invisibility to play simple pranks on his parents and others, but the mood soon changes, when it becomes clear that the supercomputer is evil and intends to take over the world using a military satellite.According to MGM records, the film earned 390,000 in the US and Canada and 450,000 elsewhere, for a total of 840,000. With a budget of 384,000 this resulted in a profit of 456,000. ........

Source: Wikipedia