Also from a little scrap of paper. I knew you'd want to know this Captain Underpants Cartoon Maker is still available on the Scholastic site.
You're able to drag characters, dialog balloons (you can't write your own dialog, but honestly do you think you could do better than Mr. Pilkey himself? nah.)
Multiple panels so if you are clever you can create a story starring those poopy heroes we all love.
Here is what the interface looks like: