Because he the claws,he has a black suit amd somehow the producers said that he the suit was organic.Also,where theres Wells daughter is kept there's a train station just like in the The New 52.Or maybe Eddie Thwane ! Earth-2 Eddie Thwane or reincarned Earth-1 Eddie Thwane! Also there were hinting at blue.Eddie was obessesd with blue. When Earth-1 Eddie sacrificed he went threw the wormhole amd the wormhole was blue.Also Eddie Thawne was obsessed with blue. So that's my reasoning.
Not convincing .Here's more proof again hinting at blue! Also Rick Cosnett posted the picture of himself as Zoom! The art was made by Bosslogic
Tell me what do you think in the comments.Also any theories you have.
But I will do a large breakdown after who Zoom could be. Anyways here's the trailer for the next episode Escape from Earth-2