Vicky

Vicky (voiced by Grey DeLisle Griffin) is a callous, sadistic, ruthless sixteen-year-old girl who babysits Timmy Turner and is the main antagonist for the first six seasons in the show, and a minor character afterwards. Her really menacing behavior towards Timmy is one of the reasons - if not the main reason - that he has fairy godparents, and most of his wishes involve getting revenge, or simply getting around her. Vicky is typically hired when Timmy's parents make a hasty getaway trip to one of their "adults-only" destinations, leaving Timmy in her cruel hands.