Cardellini previously co-starred with Kel Mitchell and Kenan Thompson in the film Good Burger (1997) which is also a Nickelodeon production.
Ken foree (roger rockmore ) also stared in the lords of Salem a movie Centers around the Salem witch trials
Kel thinking Kenan was turned into a pineapple is likely a nod to another Nickelodeon show; Sabrina, the Teenage Witch.