The Delivery Robot is a rather durable alien-made robot that delivers goods across the universe.
The Delivery Robot realized the Tourist Alien forgot his film and tried to catch up with him.  Their paths converged on Earth. However, it failed to get the alien's attention at Plaza East and the Central Park Zoo. He finally caught up to the alien on the roof of the Firehouse. Slimer helped the robot load the alien and they left Earth for parts unknown.