The Rabbit says that he's spent most of his life onstage, but never by himself. He says he "pops" up here and there, and that "synchronized singing" is his forte, suggesting he is a former member of a boy band. There's also a sign in one of his videos that says "Brooklyn pizza," and continued allusions to the fact he's a magician.
So, who could it be? We're going to guess NSYNC's Joey Fatone, who hails from Brooklyn and practices magic as a hobby.