Here’s a detail from Ayars Animation’s Cozmo app. Every time I open the app and go to this page, I remember how much work it involved; not just because of the illustrating, but because it had to be done in, like, a bazillion layers in order to facilitate the animating and interactive elements (and if you’ve tinkered with the app, you’d have an idea of what I mean).
Frank Grau Illustration 