Dilly

From Courage the Cowardly Dog

Dilly is a yellow-colored creature who appears on billboards and milk cartons. It usually says something like "Dilly sez read a book". Also, in one episode, he is on the back of a milk carton and it says "Missing, that's the way we like it". On the show he has never been seen in person. There is a picture of Dilly waving in their house.Dilly is the nick name of the creator John R. Dilworth. Dilworth is dilly.