Killer's POV Y/n whom was staying at Nightmare's castle, was always a prankster type of person. She would always make us laugh when she pranked us, she pranked us a lot, and I remember once, she had paint thrown on us with glitter. It was horrible but funny. Then she drew on Dust's face with marker, she wrote I'm the prankster on him, took him a while to get it off. Then he chased her around the castle while she was just laughing. Now, she was around cleaning the castle, making sure it wasn't full of dust or smelled. Nightmare originally made us get her as a slave but with all the jokes, we all took a liking to her. She was kind and helpful too. Y/n and I recently just started dating, the others were happy for us, and laughed when she poured water on me as a prank. Her pranks are pretty much harmless, but that's why we love her, she makes sure we're fine after the prank and if we're upset about it, she apologizes. Which we forgive her and laugh about it with her.