The "Shadow BB" legend is an urban legend revolving around the 2014 survival horror game Five Nights at Freddy's 2.
Description
In January of 2015, a video surfaced on YouTube that reportedly showed a new animatronic in the mobile version of the game. The animatronic appeared to be a completely black version of Balloon Boy with glowing white eyes, teeth, and shirt buttons. This was not the first rumor about a Shadow BB, but the first version mentioned that Shadow BB appeared to be in disrepair. However, this video and its accompanying screenshots were proven to be a hoax. There is no Shadow BB in the game.
The original video: https://youtu.be/DJMjx60QERA?si=Z37_iZ_fxFL_uN7G (go to Timestamp 0:45, oh and don’t harass or bully the uploader)