We'll start with the most obvious, or at least, the simplest explanation. Here are 5 possible answers to the question: Who is Zoom? Theories are easy to come by, so we thought we would take what's been revealed in the show, along with the decades of Flash mythology from the comics, and offer our own. But the real question, and on fans are used to asking, is who is really under the villain's black mask? With his hatred for Barry and Jay Garrick still a mystery, Zoom's real identity may be the key to understanding what the writers have in store. Now Zoom has arrived, and his plan is clear (even if the motivations behind it are not): send a number of metahumans from a parallel Earth into Barry's version of Central City, and hope one of them can succeed in killing 'Earth-1's resident super speedster. Instead, they unveiled their plans months ahead of the premiere, teasing even more Speed Force drama for Barry Allen, since 'Zoom was coming.'

The minds behind the writing, casting and marketing of The Flash had earned the right to be coy with their plans for the show's second season, having introduced the DC Comics hero's most iconic enemy (with a new, crowd-pleasing twist).

Professor zoom flash season 2