Last Tuesday, The CW debuted The Flash episode 2: The Fastest Man Alive, which introduced super villain Multiplex to the rogues gallery for this latest small screen superhero hit. They've now launched a new featurette, which takes us behind this exciting continuation of Barry Allen's beginnings as a DC Comics legend.

There are still many questions swirling around Tom Cavanagh's Dr. Wells. Is he the villainous Reverse-Flash or is he Barry Allen from the future...Or is he both? The actor doesn't delve into these mysteries, but he does talk about the challenges of shooting the Multiplex scenes, a villain that can instantaneously clone himself on the spot.

In The Fastest Man Alive, Barry (Grant Gustin) has some fun with his new powers, but a setback has him questioning his true fate as a hero. He finds himself escorting Iris (Candice Patton) to a university gathering honoring scientist Simon Stagg (guest star William Sadler). When six gunmen storm the event, Barry changes into The Flash and tries to stop them. While he does save a man's life, he passes out before he can capture the robbers, which frustrates him.

As Dr. Wells (Tom Cavanagh), Caitlin (Danielle Panabaker) and Cisco (Carlos Valdes) scramble to find out what's wrong with Barry, Joe (Jesse Martin) comes down hard on Barry for taking the law into his own hands and risking his life. Barry realizes that it wasn't six gunmen but a metahuman named Danton Black (aka Multiplex) who can make multiples of himself. Meanwhile, Iris becomes even more intrigued by the "red streak."

Go behind-the-scenes of The Fastest Man Alive and watch how this new CW favorite is coming to life: