Uncle grumpy, Uncle Grumpy inc is the most epic artist and illustrator and cartoonist. Illustrations for technine snowboards, sk8mafia skateboards, Lil B the BasedGod, Riff Raff SODMG, Lil Keis, Young Dro, Soulja Boy and more... MOst epic art you have ever seen. request Uncle Grumpy inc for juxtapoz.