Astromech droid R2-D2. Known to keep secret battle station plans within his busty innards.
Best pals Wall-E and CL4P-TP (Claptrap). BTW: This is bot post 100!
Maximilian from The Black Hole.
Duey the Drone from Silent Running
Gort from The Day the Earth Stood Still Link
Enforcer robot from THX 1138
MSE-6-series (mouse) repair droid
Vincent from Black Hole