When Bunsen uses his telescope to show the babies the surface of the planet, Baby Gonzo identifies a surface object as his alien brethren. Having felt different and "out of this world", Gonzo takes his friends on a trip in a rocketship to visit his home.
Upon arrival, Gonzo supersedes the planet's catalogued name in favor of "Planet Gonzo" and plants a flag bearing his visage. The babies are greeted by green creatures who otherwise look exactly like Gonzo. They also share a fondness for deep-friend, pickled, popcorn sandwiches and launching themselves from cannons.
The Planet and its inhabitants later appeared in a cameo during a song montage in "Puppy for a Day."