It's actually one of Cerberus' 3 heads from our upcoming game, Skullboy. I was pretty proud of my shading on this one, it's one of the best pixel arts I've ever done, if not THE.
Also, could have been done in 7/8 colors, but I ended up with 10. There's a couple redundant shades of grey in there, but work time was about 50 minutes for this, and my hand hurts a lot XD
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