
I believe 173 needs modified/new textures, for these reasons:
1. His 'real' face looks like it was sloppily painted and has some wear on the paint, while in game it looks more new. Could be hinting at this game being set in the past, but I doubt that.
2. His belly area in the picture seems to have two dark patches that don't look like shadow.
3. His 'ear' isn't just a splotch of paint, its more of a profound dot.
4. I don't see teeth in the picture, but they could've been included just to make him seem angry.
EDIT: Also, the eyes don't have lines and seem like they would be a brighter green.