This picture hasn't ages well, still back when I used to use sai.
A character I created for a story rp with nova, but due to work I'd stopped it for quite some time until recent. We reached a point I can now post this and give info following without spoiling anything.

Horizon. A sort of leader of the Nebula Xaviors. More of an advisor, he is, what his name says. A Voidstar. Black hole. Once at some point in history, a supermassive black hole that did at some point house his own galaxy. But being so distant from many others, he inevitably consumed all that was his galaxy, and left to shrunk. This of course happened over what would seem like an infinite amount of time. But this allowed him to observe the universe as that time went by, before the Nebula Xaviors reached out to him. He tells them stories and offers his wisdom where he can, and they treat him as a leader of sorts. But he sees them nothing less than his children, much like the life his own galaxy from long ago used to support.