At least, in North America and Western Europe, “the Black” indicates someone Evil.

Black Edward, Nicholas the Black - it doesn’t mean you’re dark-skinned, it means you’re a Villain.

Black-hearted, Black-souled, dirty Blackguard...

And here, in FFXIV, we are all Heroes.

So. We can be Edgy, we can be Dark, but, we can’t be Black.