Thank you for letting us know.
There is the original artist version on DA as well here:
Kid Icarus(Pit)which we already had originally in the featured folder.
My guess is that a member suggested submitting the stolen artwork into the group and neither of us realized it was stolen.
I have removed the artwork from the group as soon as I read your comment and double-checked. Thank you for pointing it out, I will be more cautious about checking submitted artwork in the future!