No, that's why he's still not getting revealed.
His whole thing is the dark, in Deltarune is a metaphor for possibility and potential, mystery.
He will forever be dark, at this point the dark is Gaster.
He's never making an appearance, I bet he doesn't even get namedropped
Best we are getting are his initials at the end of some sort of post-credits monologue text crawl
>>714554179
That would be missing the point of Faster, the dark, human potential, is endless.
The lightner side of things in Deltarune is a dark world btw.