Meet Nyx! Designed by Andyarttz on reddit, he's designed after a bloodstone.

If you're seeing a similar drawing style to the fully upgraded SFW ref sheet for Sans, there's a good reason. This is a redrawn ref sheet done by the same artist! If you want to see the original ref sheet, it's over here.
All I have for him so far is this icon, but I'm hoping to get more with him as I see more SFW poses or YCHs. If you want to use Nyx for projects, shoot me a note! More than happy to discuss projects or ideas.