A dead spirit that was sucked into the game, now haunting Baldi's Basics and BB+ as an Anomaly, the entity of Joseph, is somewhat similar to how NULL/File_Name2 was sucked in as well, theories state he must be either connected to Joe (Joe's Ultimate Bus Ride/Pinball Games), and/or connected to Playtime aka Susie (Kindly Keyin calls her), who could be their sibling, basically his sister (only to me), but for now, Joseph will have to wait until he gets added to BB+, who knows, so have fun! ;)