Shadow BB is a hoax made around the time of Five Nights at Freddy's 2.
Description[]
Shadow BB's appearance resembles his original counterpart, but more reminiscent in RWQFSFASXC (Shadow Bonnie)'s design, with a full black appearance and white eyes. The hoax was said that Shadow BB would replace RWQFSFASXC in FNaF 2's mobile port. It was later proven to be fake.