Photo Flash: First Look at Grant Gustin as 'Flash' on The CW's ARROW

As previously reported, former Glee star Grant Gustin will take on the role of iconic DC comic hero 'Flash' on The CW's ARROW. Today, the network has released the first image of Gustin from his first episode, slated to air Dec. 4. Check it out below!

Flash, whose real name is Barry Allen, will also star in his own spinoff show. In ARROW, Allen will be Central City assistant police forensic investigator and comic book fan obsessed with the Arrow who finds himself unknowingly working with his favorite hero's alter ego.

The episode is officially described as: A seemingly impossible robbery at Queen Consolidated's 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 (Stephen Amell) and team with the investigation. Oliver senses there is more to Barry than meets the eye, but he's distracted by the similarities between this current case and something that happened on the island. Meanwhile, Felicity (Emily Bett Rickards) takes a liking to Barry, which doesn't go unnoticed by Oliver. Sin (guest star Bex Taylor-Klaus) asks Roy (Colton Haynes) for help when a friend of hers goes missing. Roy is surprised when Thea (Willa Holland) not only encourages him to help, but joins the search. Unfortunately, Sin's friend is connected to Brother Blood (guest star Kevin Alejandro), and their search ultimately gets one of them seriously injured.

Photo by: Cate Cameron/The CW