Pet Demon was the first installation of the Vile Minion app. The app allows you to ask Vile (at this point unnamed) your questions and he would respond with a yes or no answer. One can also tap him to make him fall down or shake the phone to make him wobble. If one drags their finger across the screen, he'll follow it. The app is the same as its newer version in practically every way, save for the graphics and the social media function.
