The series is based on Browngardt's animated short file of the same name from The Cartoonstitute. Uncle Grandpa is also a spin-off of Secret Mountain Fort Awesome. The series is rated TV-PG.... More

The series is based on Browngardt's animated short file of the same name from The Cartoonstitute. Uncle Grandpa is also a spin-off of Secret Mountain Fort Awesome. The series is rated TV-PG.