Now I had addressed this issue in another News article of mine regarding common pixel art miscategorizations http://news.deviantart.com/article/92257/ however, it seems that there is still confusion regarding the official video game pixel art and DA.
To be very clear, the official Video Game sprites which includes sprite sheets, animations made with sprite sheets, and any edits made of said sprites, are not permitted on DeviantArt at all.
Additionally, Video Game pixel art cannot be used as a base for original pixel art, such as Pokemon Trainers made from the official game sprites or classic Mega Man sprites used as a base for other characters. I know that many people put a lot of effort into their video game sprite edits, and some may look very original, but it still does not make it original art.
The fact is that if you do not have explicit permission to modify, publish and/or redistribute from the owner of the game in question, then you cannot upload video game sprite sheets or modi