Not gonna lie rutsah, the bug regulator looks a bit plain, is early model is more unnerving imo, well that just my opinion and you know how dangerous is to have a opinion on internet, good luck developing the game, I am watching with great interest.
The early model was pseudo-3d (aka a real 3d model that was snapshot into 2D frames), which is why it was more unnerving, since it fit the otherwise 2D world of the game less. While I can appreciate that (and might use it in the future) it still wasn't an original sprite like the current one is.
The one advantage the current one has is that I have 2 versions of it, one for moving, and one (the above) for when the bug is stationary, meaning when I'm using the above model for the intro, the anemones on its heads are moving even if the rest of its body is static, so there is a bit of an animation to it.