Pokey

"Pokey" is Lisa's pet Guinea Pig. It destroys the Simpsons' living room art.

Behind the Laughter

 * The character was first introduced in the content update of The Simpsons: Tapped Out before appearing in the show. He is the second character introduced this way, after Kumiko and before Freedom, Homer Dog, Mutant Rabbit, Laird Ladd and Anger Watkins.