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When Ms. Keane gets sick she hires a substitute teacher named Mr.Green to run the class in her absence. Unfortunately because of his monstrous appearance the girls assume he's a bad guy and try to save their classmates from him.
First Air Date : Nov 18, 1998
Last Air date : Mar 25, 2005
Episode : 136 Episode
Season : 6 Season
Runtime: 12:14 minutes
Studio: Cartoon Network