Gubby

Gubby is Grubby's long lost infant brother, whom Grubby found in a dumpster in season two, episode two, aptly entitled "Grubby Finds a Dumpster Baby." Gubby is shown to be horribly mistreated by Herbert and Grubby after the two decide to raise him. He is shown to be very resourceful, grabbing a gun and firing it to scare off Cat Lady in the aforementioned episode.