The Rat in the Hat is a foe in Borderlands 2
He will come charging out of the Southwest corner of Chef Gouda Remsay. He will lob his soup spoon at you or charge and strike with it.
This works as a double entendre: To the "Cat in the Hat" by Dr Seuss. The second is is Remy: the main protagonist in the movie "Ratatouille" by Disney-Pixar who hid in the secondary protagonist hat.