Dragonball Z: The Return of Cooler

After the Namekians settle on New Namek, a mysterious mechanical planet known as the Big Gete Star begins absorbing the planet and enslaving its people. Goku, Gohan, Krillin, Piccolo, and later Vegeta travel to New Namek to stop the invasion, only to discover that Cooler has returned in a powerful new Meta-Cooler form. With an army of identical Metal Coolers at his command, Goku and Vegeta must join forces to defeat the machine planet before it consumes New Namek.