Messy Bessy is a Cow that Uncle Grandpa summoned in the episode Messy Bessy. She is voiced by Dee Bradly Baker.
Messy Bessy is a cow, she has is mostly white with black spots on her body, she wears a blue hat with a orange band and a pink flower sticking out.
Messy Bessy is a genuine certified USDA Jersey Maid who is usually summoned by responding to huge amounts of trash. She doesn't seem to mind eating trash, but she does seem to be aggravated pretty quickly and when she does get provoked, she goes on a feeding frenzy and she is capable of eating everything like the Earth and Universe.
If Messy is aggravated, then she has the power to eat enormous things such as the Earth and Universe.