"You thought Gaster worked alone?" - Ralsei Story/Context: Ralsei betrays Kris and Susie in Chapter 3 because he's actually a servant of W.D. Gaster. Ralsei uses his pacify spell on Susie, making Susie go to sleep. Ralsei is caught off guard and gets killed by Kris. Ralsei's final words were "OH GOD NO!" before being sliced in half. *Note: this is based off theories about Deltarune and its lore, but the story was fanfiction made by me while being based off the infamous "I HATE YOU!" Mario creepypasta.
Possible Part 2? Background animation by DimonKILL. Deltarune and its characters by TobyFox. "I HATE YOU!" creepypasta by Slime Beast Mario's Madness and its songs by the original creators (the list of names is very long and I cannot fit all their names here)