The twin son and daughter of Bill Cipher, Eris and Archimicarus, leave the weird dimension to our dimension to take revenge of their father, and kill everyone who took part in the horoscope, including their children. *AN: The pictures used are not my own. Plus CHARACTERS of the story, plus their parents with be at the tip of the page. ALSO, DISCLAIMER: I DO NOT own any characters or the TV show Gravity Falls. All rights go to Alex Hirsch and other owners, I do not know them all.