Family death

After watching her family being killed in front of her eyes she was taken and tested on. One day they injected her with something that gave her powers from all the justice league members. When Lucy Green was 8 years old she was rescued by the justice league unaware of her powers she was sent to an orphanage. Killing ten kids and injuring thirty children she was taken by the justice league and lived with them for the rest of her life she was trained to be able to fight than became Midnight. When she was 14 years old the league members moved out of the cave into their new base in space but Lucy had the idea of having a junior justice league and using the cave as the base.