This is looking pretty cool! You're right that he does currently look a little humanoid, but I think that boils down more to capturing the overall likeness of the original than anything else. For instance, your sprite has a lot straighter a stance, and the shape of the torso stays pretty similar throughout, whereas in the original it widens out as it goes lower (a pear shape, I guess). Some of the other proportions might also benefit from a little tweaking as well -- the hands/feet/claws in your version are very small, comparatively speaking, and the limbs are slimmer, too.
That said, I don't know how much you care about keeping it similar to the original. If it helps, I made an edit with a few ideas (I played with the head and colors, and in general just tried to copy your references):

I hope this helps for something!
