Warren T. is the main villain of the film An American Tail, and is currently a no-show Villain League member. Warren T. is really a cat in rat's clothing and the leader of the Mott Street Maulers, a gang of cats who terrorize the mice of New York City. He is accompanied nearly all the time by his accountant Digit, a small British cockroach.
He offers false friendship to Fievel when the two meet and offers to take him to his missing family - yet after gaining Fievel's trust he cruelly sells him to a sweatshop, when next they meet it is some time after Fievel managed to escape the sweat-shop: he sees Warren T for what he truly is, a cat, and is imprisoned by Warren T and his gang to stop him telling anyone, however Fievel is released by Tiger - a soft-hearted minion who doesn't share the usual anti-mice feelings most cats do in American Tail.
Warren T and his gang give chase to Fievel but are caught in a trap by the mice, who have had enough of being bullied and unleash a mechanical-mouse that proceeds to knock Warren T and his gang off the harbor and into the sea - Warren T was last seen hitching a ride on a boat heading for China along with his gang.
Role in the series
Warren T. Rat is currently not appearing the series because he is an evil cat, due to Scroopfan's love of good cats and does not like the dark treatment they get in some films.