Uncle Grandpa 101 is an internet short that was posted on Cartoon Network's website on September 19th, 2016. As well as being released on iTunes on September 8th, 2016.
- Belly Bag
- Proto-Bag (Debut)
- Pizza Steve (Mentioned, Pictured)
- Mr. Gus (Mentioned, Pictured)
- Giant Realistic Flying Tiger (Mentioned, Pictured)
Uncle Grandpa teaches a class of Uncle Grandpas on how to be like him.
- Uncle Grandpa states Pizza Steve's and Mr. Gus' full names.
- Uncle Grandpa almost called Belly Bag "fanny pack" like in Secret Mountain Uncle Grandpa.
- The whole lesson for this minisode is that the education system is messed up, where the actual geniuses are placed working as minimum wage careers such as custodians
When an Uncle Grandpa classmate took out his Proto-Bag, it was still on him.