Dipsy is one of the feared Teletubbies. He invented all their weapons, machinery, vehicles, and even some of their allies. He is considered a very dangerous being, except for his weakness: He's weak. He is the only really smart evil Teletubby, if you see his quote it sounds what a normal scientific villain would say. He is also the only Teletubby that has ever gone a day without doing something completely insane.
He is also the dictator of West Brazil (The fascist portion of Brazil), like how Po is the dictator of West Poland.