Serving as a spin-off sister show to Secret Mountain Fort Awesome, Uncle Grandpa is a magical shapeshifting person that stops by children's houses every day to see how they are doing. The children he visits have a problem of their own and Uncle Grandpa tries to help them through a series of chaotic and surreal misadventures. He is a clowny sort of person who sometimes eats inedible objects (paper, and mostly books). He drives/lives in a UG-2000 model robotic RV known as the Perpetual Persistence and is accompanied by a talking red fanny pack named Belly Bag, a green dinosauroid named Mr. Gus, a static photographic cutout of a tiger named Giant Realistic Flying Tiger, and an anthropomorphic pepperoni pizza slice named Pizza Steve. He greets everybody using “Good Morning.”