Escape From Earth-2 has thrown up some big questions for fans of The Flash.

The identity of the man in the mask is one of the biggest…

Contains spoilers forThe Flashseason 2, up to and including episode 14Escape From Earth-2.

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Heres what we deduced…

For starters, it becomes apparent quickly that this guy is Caucasian.

And in another fleeting shot, we got a good look at the man in the masks stature…

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So, our mystery masked man seems to a fairly heavy-set guy.

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Hes not rake-thin skinny, but hes not Arnold Schwarzenegger-levels of muscular either.

That doesnt help much, though, as we already knew about all of their Earth-2 counterparts.

Breaking Bads Heisenberg has competition for the title of The One Who Knocks.

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Its the most emotional glass-tapping weve seen on screen since Bernard Cribbins inDoctor Who.

Could this be a character whos been held captive somewhere before?

Or has he just been Zooms prisoner for so long that he worked out a code for himself?

Either option is plausible.

That word is Jay.

Zoom promptly bursts in and puts a stop to the chitter chatter.

For some reason, Zoom has imprisoned him rather than murdering him.

), or could be used as emotional leverage against someone else.

At the end of the episode, Barry is forced to leave the masked man behind.

He vows to come back and save him when all this pesky world-saving business is over.

Him and Barry share a moment, with their clenched fists touching the glass simultaneously.

And thats your lot.

Perhaps Zoom has told Jay to up his game and bring him some Speed Force to feed on.

Jay is no longer useful and could blow the entire operation if he blabbers.

The folks at The CW wouldnt give a character the name Hunter Zolomon without good reason, after all.

Another big theory is this: the masked man is Henry Allen, Barrys father.

But how would he know secrets about Jay Garrick?)

Escape From Earth-2seems to encourage us to think that the masked man could be Henry.

Perhaps hell have a larger role to play towards the end.

Eddie Thawne seems like another potential man-in-the-mask contender.

Again, the physical parameters that weve been shown seem to fit.

And Rick Cosnett was suspicious by his absence during last weeks Earth-2 Central City Police Department scenes.

Perhaps, Earth-2 Eddie dug too deep into an investigation of Zoom and uncovered secrets involving Jay Garrick.

But why would Zoom lock him up rather than killing him?

Or, admittedly, it could be Letscher himself under that mask for all we know.