Uncle Crusty

Uncle Crusty is an Australian duck-billed platypus who appears in "Not Home on the Range", and is Leo Chockers' uncle who owns a cattle station in "The Bush."

Trivia

 * He highly resembles Edward from Camp Lazlo, which is another show that Joe Murray created.
 * Leo and his family as wombats, the second being Syd and the Sydneys as koalas, and the third being Britt as an oppossum are marsupials. However, because he is a duck-billed platypus, he's not really a marsupial.