A.J. plays resident genius in Timmy's crew. He's got the biggest brains of the three pals, and Timmy's one smart cookie himself. A.J. will be the one to invent a pocket teleporter or something else-he just hasn't gotten around to it yet. Between his brains, Chester's street smarts and Timmy's leadership, these three twerps just might have what it takes to survive the adults, Fairy Godparents and evil babysitters of the world.