when Dark moved out with his boyfriend Lucifer his little brother was only like 14 years old and his mother was pregnant at the time and she still had dad so Dark believed they were fine but after that day it was the last time they heard from them till one night Lucifer and Dark were asleep in their bed their was banging on the front door making them wake up as it scared them so they got up out of bed and ran downstairs lucifer having a bat in hand just in case and they threw open the door and that is when Mark ran in with brusies,skinny as hell and bleeding,what Dark doesn't know that their mom had died during childbirth and their dad took all his anger ouit on mark..start from there