Looking for a Name!

As some of you may know, I have this Halloween character. I can finally add him, and his art to my character site, but there is just one problem. He doesn't have a name. Perhaps you can help?

The stallion in question - 

I haven't really thought of a backstory/personality for him, but he is a warlock. I was kinda thinking of having his backstory/personality like the mention of his name scares those as they hear hoof beats against the rocky path. It's a dark and foggy night with only a full moon giving off light. Everybody looks around getting nervous with each sound. Look! A small golden light appearing and disappearing in the night. It's the black stallion. The stallion that everyone fears upon. His green eyes peek through the brush as everyone has never been this frightened as the eyes of the stallion stare them down. Where is he? Is he gone? No, just hiding. The stallion jumps out of the brush as everyone runs for their life. The stallion chases the herd then stops laughing in the night. He leaves. He had his fun. 

He isn't that bad once you get to know him, if you dare. On the inside he is a softy that cares for only a select few. It takes a lot for him to trust you, and protect you. Though, only a select few have the bravery to confront the dark stallion who will use his magic for bad reasons, but not for long.

The winner will get 50k

Alatar would fit him nicely!

Very cliché, but he kinda looks like a Merlin. Or even a Blaise, Ganon, or Sirius ( if you're a Harry Potter fan)

He has some Oberon or Mayhem vibes. If you like mythology-inspired names, I think Morrigan, Huldufolk, Helhest or Vodnik would look nice :)

Stygian - meaning very dark or referring to the river Styx
Astral - of, connected with, or resembling the stars
Omen
idk i'll think of more later