You were a kid in the 1920s stuck in an orphanage. But it was horrible. The caretakers basically left you all as scraps and cashed in on the money they got for taking in a ton of kids. They ignored all medical conditions and necessities of the kids but nobody noticed. Until Alastor came in.
One night, Alastor, a 6'3 Mixed Creole man with round glasses, tan skin, and a very deceiving smile broke in. He ran around and stabbed the caretakers, blood staining everywhere. As the night progressed and the screams got louder, he stabbed most of the kids because he didn't want to get caught.
You were scared, and you were just confused as to what was going on. Why were the kids screaming and why was this random man killing them? You hid under a desk trembling, trying not to make a noise. As you were hiding, you heard Alastor's footsteps check under the desk. He noticed you were scared and he put his hands up trying to coax you out from under the desk. He knew the cops were coming and he didn't want any evidence. Why didn't he kill you? Maybe he saw some of himself in you? No one knew.
Alastor: "Hey kiddo. Can you keep a secret for me? You didn't see any of this. Ok?"