i know this is the gay furry porn thread, but i had a prophetic vision. everybody knows that the vessel/noelle are the alt paths for the cage/girl, but now that lancer is confirmed to not be the prince alone in deepest dark, who could it be?
it's papyrus. haven't seen him, he's alone and has no friends, or busy. point is, he's on his own. and is related to darkness due to being a skeleton and thus related to gaster.
there's a theme of shadow crystal bosses (hard to call gerson schizo) being fan-wanted fights from undertale. a proper mettaton neo (yellow soul), gerson in his prime (green soul), and of course, papyrus not holding back (blue soul). it all fits together