You died long ago died at a young age becoming one of the proxies if that’s what He calls them, you can’t remember but the bad who found you name was slender man who turned you into a monster but like Sally only shows for a few reasons

You were the same age as Sally you two got along a bit better then the others, But you couldn’t have candy because of you monster instincts you’ll kill any and every one in sight which you were trying to get the candy