When she's not playing the totally brill middle child Alex on Modern Family, Ariel Winter is very busy mouthing off. In animation, that is. She's the voice of Gretchen the Fireside Girl on Disney's Phineas and Ferb and Robin (yes, a female Robin!) in Warner Bros. upcoming animated flick Batman: The Dark Knight Returns, Part 1. On Friday June 29 she's back as the mermaid Marina on Disney Channel's preschool smash Jake and the Never Land Pirates (9am/8c). TV Guide Magazine chatted with the delightful Winter about her toon-filled life.