This is pretty obvious enough. The mastermind behind the Nightmare Realm Bill Cipher Assassination Plot, or NRBCAP. Can you guess who it is?
Yeah, yeah, we all know she's coming, blah blahhhhhhjkdsjdshjcsmncdmndjcdcdcddjkjdncncxncxjn I aM hErE. yOu CaNnOt EsCaPe FrOm ME. YoU WiLL bOw DoWn tO uS. AnD yOu WiLL LoVe ME AgAiN, BiLL CiPhEr. IF yOu DoN't LoVe ME... ByE bYe, BiLL... HAHAHAHAHAHA!!!!!!!!!!!!!!! Okay... that was weird. Stop getting on my computer, Pyronica! Wait, did I say that out loud? YeS yOu DiD. Drat.