Tobor the Great

Tobor the Great aka Tobor is a 1954 American blackandwhite science fiction film from Republic Pictures produced by Richard Goldstone, directed by Lee Sholem, and written by Carl Dudley and Philip MacDonald. The film stars Charles Drake, Karin Booth, and Billy Chapin.

While trying to perfect the robots control systems, an inadvertent episode involving Gadge, who sneaks into the laboratory and turns on Tobor, shows that the robot can make emotional connections with people. Gadge not only controls the robot, but when he is accidentally tossed about, Tobor appears to comfort him, as if he is sorry for hurting the boy. After cleaning up, the scientists realize that an additional chair had to be brought to the news conference, leading them to believe that someone has infiltrated the closely guarded laboratory. Aware that their robot could fall into the wrong hands, they construct a small transmitter in a fountain pen that will be able to communicate with Tobor.When an organized attack by foreign agents is thwarted by the defensive devices at the Nordstroms home, the spies hit on another scheme. Sending Gadge and his grandfather an invitation to a space flight presentation at the Griffith Park Planetarium, they intend to hold them as hostages when Gadge and Nordstrom show up the spies are successful and kidnap them. Dr. Gustav Peter Brocco tries to force Nordstrom to give them the crucial information needed to control the robot. ........

Source: Wikipedia