The Flash
Barry Allen (Grant Gustin, pictured) is featured on the promo poster for "The Flash" Season 2. The CW

The premiere of "The Flash" Season 2 is just three weeks away, and fans are getting excited. The CW gave the series' loyal viewers an extra jolt Tuesday when it debuted a new promo poster teasing the new episodes on Twitter.

The poster, unveiled Tuesday on Twitter, shows Barry Allen (Grant Gustin) kneeling down in the middle of a pool of water in his new Flash suit as electricity appears to pulse through his body, a reference to the lightning strike and particle-accelerator blast that gave him his powers.

See the poster in the tweet below:

If Barry looks a little overwhelmed in the poster, who could blame him? The superhero speedster will be joined by a host of new characters in Season 2, including Jay Garrick (Teddy Sears), Jesse Quick (Violett Beane), Wally West (Keiynan Lonsdale), Patty Spivot (Shantel VanSanten) and villains Zoom (Tony Todd) and Atom Smasher (Adam Copeland). Plus, rumor has it that thanks to all the alternate timelines and other worlds in the show, fans have not seen the last of Dr. Harrison Wells (Cavanaugh).

One of those villains is featured heavily in a behind-the-scenes promo released on Twitter following the poster reveal. The teaser previews a showdown between Barry and new villain Zoom, in which Zoom does his best Bane (from "Batman") impression, picking up Barry by his neck. The video reveals the green-screen technology the show uses to pull off its elaborate action scenes.

Comic fans know Zoom as Eobard Thawne, a fan of the Flash from the 25th century who develops the same powers by replicating the electrical jolt that gave Barry his super speed. He then uses that speed to travel into the past to meet his hero but, becoming mentally unstable in the process, decides instead to take on the Flash as his rival. The show has kept Zoom's TV-show identity under wraps, especially considering "The Flash" already has (had?) an Eobard Thawne -- cough, Dr. Wells.

Watch the behind-the-scenes promo for Season 2 in the tweet below:

Will Barry be able to stop Zoom? Fans will have to wait to find out. "The Flash" returns to the CW for Season 2 on Oct. 6.

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