Tonight The CW will introduce Barry Allen on "Arrow," where he joins a multitude of other comic book characters that have appeared on the series. Played by Grant Gustin, Allen will appear as his regular self in tonight's and next week's episode of the series before potentially spinning off into his own "The Flash" series. The CW has released two clips from tonight's episode, which you can check out in the players below. Titled "The Scientist," tonight's episode is described as follows:
"A seemingly impossible robbery at Queen Consolidatedís Applied Sciences Division brings Central City police scientist Barry Allen (guest star Grant Gustin) to town. Citing a similar case back home, Barry offers to help Oliver and team with the investigation. Oliver senses there is more to Barry than meets the eye, but heís distracted by the similarities between this current case and something that happened on the island. Meanwhile, Felicity takes a liking to Barry, which doesnít go unnoticed by Oliver. Sin (guest star Bex Taylor-Klaus) asks Roy for help when a friend of hers goes missing. Roy is surprised when Thea not only encourages him to help, but joins the search. Unfortunately, Sinís friend is connected to Brother Blood (guest star Kevin Alejandro), and their search ultimately gets one of them seriously injured."
You can see our full gallery of images from the episode by clicking here. "Arrow" airs on Wednesdays at 8 P.M. ET/PT on The CW.