Its ok lol, you're under no obligation to come up with a cutesy nickname variant, haha!

Besides, I already did:

speck

Implies smolness.

... After a long time on the web, using various monikers, I've found that anything that can't be easily shouted as an immediate, specific warning in an fps game, well, that's a requirement for my use case, lol.

So, stick with something that can be easily shortened to two syllables, max.

Then, from there, the harder part is to find something with as many intended layered or multiple meanings as possible, or a clever play on words... that last one is harder to do in a way that won't uh, cringe with age and time... culture moves in weird ways.

... So what better than a variant of spectrum, which literally means ... a wide variety of things within a defined category?

Oh right and I am literally on the spectrum.

And I have fun with optical physics, due to game modding / dev tinkering.

And when you shorten it to just spec, will, maybe I'm built to spec, or designing a new spec, which may be related to spec ops, immersive, tactical style gameplay...

And then of course there's the ghost stuff too.

And the l33t speak throw back spelling, yeah, that's part of what I unironically consider my culture.

... But hey, what's in a name?