
The first time I played the game I thought the whitish bottom part of the final boss is just some kind of accessory or dangles or part of a curtain.
But it's actually Ultimecia herself (or is it?) surrounded by veins and arteries

I am sure most of you notice this. But let's discuss on it further. Here's my own interpretation:
So the top part doesn't appear to have any distinguishable face. It's just a ball of light. This makes it look robotic and is apparently controlled by some other source of power. So we can assume that the bottom part is her physical body which she has left.
Now her soul/consciousness lives in this powerhouse epic vessel on top. But of course she can't risk having completely deserting her physical body. So she created some circulatory system between her new robotic body and her physical body to ensure that everything about her survives.
What do you think? I am sorry if this is explained before.
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