Im in another theorycrafting mood.
Im thinking of tackling why the Knight is deliberately leaving shadow crystals with darkners.
It appears this might actually be the reason for the Roaring Knight creating dark worlds in the first place.
If the objective was to start the Roaring by opening too many dark fountains then that could easily be done behind the Heroes' back.
What we see however is a dark world being opened, closed then opened again in another area.
It almost seems like the Knight has an objective more than just opening dark fountains and may even be waiting for the previous fountain to close before opening another as if to avoid starting the Roaring too soon.
Whats more is there is obvious evidence that the Knight is the one leaving the crystals putting down the theory that Gaster is the one making schizos out of midgets.
King mentions that Jevil was the one that brought up the Roaring Knight to him implying that the Knight met with Jevil and only Jevil as King says that he's never met the Knight.
Spamton tries to talk about the knight before glitching out and apologizing as if to say he knows too much and something stopped him (maybe the crystal?) implying that he knows more about the knight than Queen.
Chapter 3 we stopped the knight before they could plant the shadow crystal, and I speculate Tenna or Ramb was the target.
Chapter 4 they targeted Gerson but he was wise enough not to use it as he saw no value in it.
What I want to know is what value is there in doing this? To recruit them by instilling a desire for freedom? A goal that the Knight can use as the carrot on a stick?
Does it correlate with why the Knight is looking for "sacrifices"?
Are they just pawns to buy the Knight time to find said sacrifices?