Monster Buster Club s01e13
Titre original : Statue Of Limitations
Sam volunteers to prepare a celebration of the day, when city was founded by a man named Addison Single. Cathy, however, proclaims Addison was an alien who tried to make this city for aliens. Sam refuses to believe it, but soon deep in the abandoned MBC storage beneath their clubhouse, where Chris accidentally activates a violet gemstone bringing the statue of Addison Single to life, which is revealed later that it is not a statue, it's the founder himself. Now The MBC Members must stop the statue from turning all citizens into stone, while keeping them busy so that they will not notice.
(this is episode 15 on DisneyXD USA)