I like that his skeleton is very clear to see, its cool. He seems to be a bit brighter and easier to spot. I like that he has eyes, it makes him more expressive, though they are a little cursed. The way they expand and contract looks mystic and sick.
Generally he looks unfinished, most likely because he is. His head feels like it's lacking something inside. Probably because the bubbles don't have a good bubble shader (yet), it's just a moving texture. Hope to see him become more gooey with goo-physics as well.