I got the original graphics from sites which had what looked to be official posters with promotional printing beneath the pictures. They seemed to have been handed out for promotional purposes. I touched them up for contrast, bad pixelation in some places and packaged them to be printed in the right resolutions and sizes. I don’t advertise myself on them so the users can enjoy the pure content. I don’t make money from it. Someone may be able to argue copyright on it, but definitely no exploitation.

Now, as far as Walmart printing them, that’s more of a copyright because they produced the product. People just look at mine.