[@Walnutella]
I'll be a bit snarky about this. But may I ask on what is the purpose of his cyborg eye? Just one nitpick, it seemed that it is more made to fit the image of the faceclaim, when you could just write on Appearance something like 'he doesn't have a red eye' or 'He wears an eyepatch', which is more common for pirates. But if you really want your character to appear like the face claim, you can just write that a ruby/red glass is placed on his eye sockets, etc.

Putting that aside, the main issue of the character: His Devil Fruit. I expect a few Logia, and am pretty open towards them, but I didn't expect literally the strongest Devil Fruit for this first one.
Whether it is the strongest is up to debate, still that Yami Yami fruit could do things that are thought to be impossible even by the wildest Devil Fruit Standards. 

But I’ll make it clear, the main purpose is more to clarify on that fruit you’re using. I know you're using the fruit a bit differently, but I want to make sure--- Will be a bit spoilerish but just a few questions---
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Could he do things like eating Multiple Fruits?
Could he nullify Devil Fruit? Or is it just the gravity/darkness part that he can use?
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