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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.