Pop is Bop and Kade's father and a minor character of An Oobi Vacation. He is known for being the exact oppisite of Bop, a crying, depressed hand. In Know Your Hand!, Charlie told him that Bop got his driver's license, and he started crying. He is portrayed by Buckteeth.
No matter what, Pop seems to be sad and sobbing. In Gramflu, he got so depressed that he wanted to throw Bop into the ocean. Despite being always sad, he still loves Bop.
Pop has his fingers curled up, like Grampu. His eyes are purple, like Bop's were in An Oobi Vacation.