|Cartoon debut||"The Great Sock Mystery"|
He first appeared in "The Great Sock Mystery" when he stole D.W.'s favorite pair of socks. After much debating, he eventually forgot about it when he met Toady. They apparently knew each other since they were tadpoles.
By "The Great Lint Rush" he had a very large share in the Sock Market and practically controlled it. Pal, Amigo and Baby Kate tried to get the socks back from him, but after negotiating Pal was only able to be loaned a sock with an interest rate of 10 socks by the end of the week or else Mr. Toad would take control of the Reads' House. So they made up a plan to trick Mr. Toad; they would make him think lint is worth more than socks. It worked and it also saved the Sock Market.