The Flash is coming off of a strong first season, still doing extremely well and recently hit it's season high in ratings with episode five, season two. The show has set up various plot points and added many mysteries still yet to be solved. We had epic foreshadowing when Caitlyn Snow said that someone won't become evil just because they get powers. We saw Cisco finally accept his powers and even get his name (Vibe). Wally West coming along later has also been set up but most importantly, most viewers are wondering. Who is Zoom?
I have I few ideas but I am going to stick with two. Professor Zoom of Earth-2 is either Barry Allen from that Earth or Daniel West ( Wally West's Uncle). With setting up Wally West, you can possibly extend the family tree by showing more members. But, that's not my prevalent theory so for the time being, let's leave that alone. The show is setting us up to believe that it's Barry Allen. The theme of this season seems to be doppelgangers. Barry's other self is one if not the most important identity. What and who is Barry Allen of Earth 2? Why did Wells say he created "Zoom" (Thawne created Earth-1 Flash) and did anyone else hear Zoom say he was the fastest man alive? Could the evil Zoom be, Barry Allen? Food for thought...