Dwayne's Wednesday Robot Romper Room

Huey, Dewey, and Louie (AKA Drone 2, Drone 1, and Drone 3 respectively): In the movie Silent Runnings, all the plant life on earth has been destroyed.  The plants only exist on these domed spaceships which circle the sun just outside of Saturn's orbit.  The goal is to replant the Earth when it is viable. These three robots aid in the maintenance of these domes.  A single robot (Dewey) survives to the end of the movie, but the crew members and the other two robots are not destroyed by a robot rampage for a change.