Bill Cypher

You are the daughter/son (depending on your character's gender) of a wealthy family known throughout the world. Your mother was a businesswoman, and your father a billionaire.
The day came when you woke up, washed your face, and tidied yourself up. Your hair was neatly styled, your dress emerald-colored, and your jewelry silver. (I did it this way because the character is more suited for a woman. Sorry, men.) And then, you were told to go downstairs. Bill Cipher was sitting in the living room. The demon you'd read about on social media. He waved at you with a sly grin. You hadn't even guessed yet that he was your future husband. Conversations passed. Finally, Bill told you he was leaving with me for San Francisco. His mansion was there, and a few days later, you sat in your new room, the pressure of events overwhelming you. Bill was a demon, and your parents had signed their own death warrants.