Thanks Razor! 
So, I figured I’d post this for the other guys doing Mumm-ra. I was thinking about what environment (if any) I intended to place him in, with the obvious answer being his tomb, and then started worrying about not finding decent references.
After looking around a bit, I’ve found that any worries are pretty misplaced. The art styles vary drastically, so I think you can get away with pretty extreme detail changes (even if you’re not doing a redesign) and still fit comfortably within the original Mumm-ra world.
The ancient spirit statues are based on the idea of the Egyptian canopic jars that were placed in tombs and contained the interred’s organs. I imagine as long as you relate that in your environment, it’ll look great!

