Interesting choice to give him extra bone between his fingers... it caters to that side of the fandom who just draw blocks for hands instead of just phalanges.

I quite like it! ^_^

I like the idea that the skeletons are not HUMAN skeletons, they are MONSTER skellies, so their 'eyebrows' can move like a sort of skin to produce emotions... (it sort of allows freedom to draw them beyond the limitations of stiff bones).