It’s your memories…traumatic and sad memories mixed together into a being…it knows you…very well. It can even sound like you. It can even mimic the voices you’ve known..it can repeat some of the phrases you’ve heard by ones you’ve known. It looks identical to you..but you younger. It can shapeshift how you used to be..how you used to look. Tho it’s unclear whether or not it’s evil…or if YOU are evil.