The Fairly OddParents (2001)

Episode Overview

After Mr. Crocker tumbles into a well, Timmy's class gets a substitute named Mrs. Sunshine, who initially appears to be incredibly kind. However, when Timmy wishes for her to stay as his permanent teacher, he quickly realizes that she's far worse than Mr. Crocker. In reality, she is a skilled fairy hunter known as Mrs. Doombringer, and her true nature soon becomes evident.