If it were Earth-2 Barry and he had some similarities in his life, it would explain how he intuitively knows what friends to use or to strike at.

That's going to be what's used if there's any familiar face under that mask, but certainly it would be necessary to completely divide Barry from Zoom, rather than just masking the voice, since fans are so familiar with Gustin's voice.

Zoom's voice, provided by Tony Todd, can be explained away by the fact that he's modulating the voice with high-speed vibrations. This is derived mostly from the fact that Zoom's costume looks like a matte-black version of Barry's with a few extra touches to further conceal his face. There's a popular theory right now that Barry Allen's Earth-2 counterpart might in fact be Zoom. He wasn't technically faster than The Flash, although it often seemed like it his powers worked a little differently and involved manipulation of time, allowing him to basically move between seconds, appearing fast but in fact moving at normal speed, just in a way that made him nearly impossible to hit. I will do anything to make the Flash a better hero.' I will recreate myself to help my friend and in turn - the world. And only by surviving it does one become stronger. I understand the depths it will drag one down to. I have taken the name and colors from Eobard Thawne - the time traveler know as Professor Zoom - in order to terrorize my friend. Despite what the public believes, I am the fastest man alive. Like the Reverse Flash on television, he incorporated some black into the outfit, he worked to make Barry 'better' and he had the crazy red eyes. Zolomon was somebody who fancied himself a friend and aide to The Flash.

Professor zoom the flash cw