Grant Gustin made his debut as the DC speedster (pre-superpowers) on an episode of Arrow earlier this season.
In preparation for the spinoff, fans of the CW series got to know Allen as a geeky and earnest (if not entirely truthful) potential sidekick to Oliver Queen (Stephen Amell as the Green Arrow) and love interest to Oliver's Girl Friday, Felicity Smoak (Emily Bett Rickards).
This is Gustin's first photo in superhero garb, though we only get a look at his mask -- not the rest of the Flash suit.
The costume was deigned by Colleen Atwood, a three-time Oscar-winner who designs the costumes for Arrow. Production on The Flash pilot begins next week.