Deltarune chapter 2+ theory · 1:43pm Sep 30th, 2021
Probably contains spoilers, so this is your warning.
Just putting something that came a little bit ago so I don't forget. Also to share and hopefully to point to if theory will come true. So there it goes.
Ralsei is mastermind behind opening of new fountains of darkness. As we know after chapter two Kriss open up fountains of darkness when he is not controlled by player. But we as a player steered through game by Ralsei. And once in each chapter he moves player view from him and Kriss towards to Susie by saing to "close our eyes end think what she is doing right now". And after we come to Ralsei and Kriss again, he sayed: "so that why, OK, Kriss". So my theory is that he one motivates Kriss to open new fountains. But instead of doing that for some evil plan, I think he doing it to help Kriss and the Player. So Kriss can get friends and get free from control of the Player. And to give player someone to play with. And that someone is Ralsie.
If some read this tell me what you think in the comments.