Cookie Monster's Pop
From Muppet Wiki
Cookie Monster's Pop is featured in a Monsterpiece Theater sketch titled Conservations with My Father, with his son Cookie Monster. The bespectacled monster is a strong adherent to the importance of energy conservation and shares his son's love for a certain crumbly treat. His sweet tooth ultimately gets him in trouble with Chef John for eating the cookies he was saving, resulting in a chase through their home and back into Alistair Cookie's living room.
Other members of Cookie's family, seen in other appearances, include his mother and sister.
