Mike, Lucas, and Dustin are in the forest looking for will after he disappeared. When they run into a boy and a girl they had 11 and 12 one their left arm. The number being there name being the number on their arm respectfully. 12 explained he and 11 are runaways from a MK ultra . The 3 take them home and hide them from their parents.
Bio.
12/Izukunot mine.
This is in season one.Izuku x Eleven and Mike x Will.
11 will be adopted by Hopper. Izuku will be adopted by Joyce.