As shown in Uncle Grandpa for a day, Uncle Grandpa is very addicted to peanut butter, even singing a song about peanut butter.

As revealed in the episode Nickname, Uncle Grandpa's nickname is 'Bobo'.

Uncle Grandpa's catchphrase is 'Good morning!'.

It's possible that Uncle Grandpa isn't human.

In the pilot episodes, Uncle Grandpa's propeller beanie hat used to be red, blue and yellow striped, but when the show was picked up, his propeller beanie hat is now completely blue.

In the pilot and Uncle Grandpa 2, he has hairy legs, flab over his eyes, bags under his eyes, and an 'X' on his chin.

The fact that he is everyone's uncle and grandfather is illogical as it just makes no sense but since he is a cartoon hero, he is allowed to break the rules of geneology (family trees).

Both are icon Cartoon Network characters.

Both star in the A-Plot of every episode.

Both have their sidekicks ( Belly Bag and Darwin Watterson.).Both are the titular protagonist of an animated show on Cartoon Network.Uncle Grandpa is very much similar to Gumball Watterson from the hit animated show 'The Amazing World of Gumball'.At first Uncle Grandpa's plans seem dumb, but in the end his plans usually work in his favor and he ends up (not always) getting the job done. Uncle Grandpa is always using these magical powers, with the assistance of his Belly Bag of course. Uncle Grandpa seems to have a different array of magical powers, that range from time traveling and making clones of himself. Gus, Giant Realistic Flying Tiger, Belly Bag, Frankenstein and Tiny Miracle. The only person who never tries to manipulate him and always speaks up the truth is Mr. Uncle Grandpa is so naive and foolish to a point where he can easily be fooled/trick/manipulate by his own surroundings, especially Pizza Steve, who constantly uses Uncle Grandpa's dumb and good-nature to earn his praise and obliged to Pizza Steve's demands. Uncle Grandpa's overall nature is often describe to be a foolish toddler, he is known to be carefree, extremely ignorant, weird, stupid, joyful, extremely naive, optimistic, helpful, kind-hearted, considerate, sarcastic.

He also wears a talking red fanny pack, known as Belly Bag. He also has a brown mustache, with a tooth sticking out of it, and a large chin. He is a short older adult who wears black overalls with rainbow shoulder straps, a white collar shirt and wears a blue propeller hat that sits on top of his head (which has a prominent lump).

Gramps wilson ok