The answer may be an official “maybe.” Considering that the character was described only as “Deranged Squad Female” in the “Arrow” episode, the show is a long way from actually giving her a real role. Even information that this was Harley Quinn came from roundabout sources.
Executive producer Marc Guggenheim confirmed that Harley Quinn was indeed there. And one of the episode’s writers, Keto Shimizu, tweeted about the actress and character from the set.
— Keto Shimizu (@ketomizu) March 20, 2014
Alas, this does not mean that future incarnations of Harley Quinn on “Arrow” will be played by Strong — who also provided the Harley Quinn voice in the “Batman: Arkham” series. The role has not been cast officially, and the show does not have plans to bring back the character immediately.
“Arrow” airs Wednesdays at 8 p.m. on The CW.