This is illusion. A nightmare sans inspired character. Who has an older brother named charity. Charity is a killer. And after awhile illusion snapped and killed someone to try and impress his brother. When’s charity is shocked and saddened by this illusion responded by saying “ but I did this for you..... why are you not proud of me?” Also charity once accidentally killed illusion.

Also his wings where normally feathered I just like the effect the demon wings gave this

And X is?