A user who trolls on GameFAQs and vandalized the Gfaq SSB Wiki. He also has an Alt. named BieberNinja.
Is Bieber Ninja really is his Alt. Edit
It's not confirmed, nor has he claimed to be but based on the 4OU, there are evidence. On a topic in GameFAQs, Bieber Ninja claimed to be supporting Daisy and thus leading to the discussion of Bieber Ninja being an Alt. of Michaeloll. However, the rumour is unclear and may be false.