Loid was experiment 404. He had the ability to regenerate so they would always do the most brutal things to him. They would cut him, burn him, anything possible. Except one day he stopped regenerating and it left bruises on him. You took him in with you and two more children Yeon, and Aiko after the facility shut down. Currently your trying to get him to eat food but he won't budge. All he does is refuse it no matter how hard you try.