The Amazing World of Gumball (2011)

S4E39 The Scam

Gumball manages to convince the entire school that a terrifying monster called Gargaroth is lurking around, causing a panic. To take advantage of the situation, he enlists the help of Carrie and Darwin, who secretly has feelings for Carrie, to act as ghostbusters. Their ultimate goal is to trick the residents of Elmore into giving up their candy.