I remember a sticker that used to be all around posters and things, on various street corners. It was 2 versions. One was a white face with a polygon-like 3d effect around it, in green. The other one was just a black face. I wish I had a picture, I couldn't find one like it on google. They just struck me as someone who put a lot of money and effort into a sticker. And they were very interesting.