Animation requires a special kind of Foley sound: more heightened, and less bound by realism. Plus, when working on cartoons, Foley artists start from scratch with no production sound to match, which opens up a world of creative possibilities. Foley artists Sanaa Kelley and Monique Reymond showed us how they created cartoony sounds for “Avatar: The Last Airbender,” “SpongeBob SquarePants,” “Rugrats,” “Invader Zim,” “Teen Titans Go!,” “Kung Fu Panda: Legends of Awesomeness,” and more. Sanaa Kelle