This one is a bit strangely colored, because it's supposed to be a "Fiendish Bugbear" as per Dungeons and Dragons 3e rather than true demonic color, which would be more pure on a demon.
The picture of the mini itself is too small and blurry, but from what I can tell, it looks too clean to be a demon. Try to tatter up the wings a bit w/ a modelling knife.
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