The Cricket, which has lived in Geppetto's house for over a century, makes his first appearance in chapter IV, after Pinocchio's mischief has landed his creator Geppetto in prison, and insists that Pinocchio must either attend school or work, to function properly in the world.
In chapter XIII, the Cricket appears as a ghost to Pinocchio, telling him to return home rather than keep an appointment with the Fox and the Cat (Il Gatto e la Volpe).