Many episodes were never finished due to the show's sudden cancellation. These include "Sandwich Mountain Uncle Grandpa", which is a sequel to "Secret Mountain Uncle Grandpa" and "Friendly Friend Happy Clean Fun!", which is about an old lady who befriends the Disgustoids and teaches them how to lie. The old lady was later used for OK K.O.! Let's Be Heroes as the character Ginger.
The name of Festro's shoe brand is "Brocro" and he treasures them deeply due to being forced to play with his father's Brocro shoes when his mother would lock him in the closet as a baby.
Dingle is the only one from his family that doesn't wear clothes and can't speak properly.
Many of the background characters would later be reused for Uncle Grandpa.
A picture of Scooby-Doo can briefly be seen in "What it Do Nephew".