it's an animated gif. Not too complicated. It only has 12 frames. In each frame there are different characters used to create the the man's silhouette and different movement.
I was expecting to hear a "beep, beep, beep," and see him walk backwards. That's what happens when I misread "inverse." :mellow:
It's an animated gif. If you reverse the order of the frames, you could get him to walk backwards, sure. I know that I've got a gif animator in my software library somewhere.