Insectibles Episode 12 The Old Switcheroo Episode Title: The Old Switcheroo Episode Description: Grampa's invention of a growth formula turns out to be a brain-switching potion instead! Adilla steals the formula after Zak and Grampa have already switched bodies and, not realizing its true effects, ends up switching bodies with her henchmen! A problem like this will require a lot more brain-switching before everything's sorted out!