A few nights ago we got a new promo for the upcoming episode of Arrow titled Suicide Squad. During the promo a small flash cut showed a prisoner of A.R.G.U.S with oh so familiar pigtails. This lead many to assume that The Joker's crazy girlfriend Harley Quinn maybe making her live-action debut on Arrow. This is coming off the fact that Harley Quinn is also s member of the Suicide Squad in The New 52.

Now I'd like to point out that none of the producers, network or stars of the show have even hinted that, that was indeed Quinn. But an up and coming actress by the name of Cassidy Alexa has seemingly announced that she is indeed Harley Quinn? Her Twitter exploded last night with congratulations from Arrow fans on getting the role.
@cassalexa being Harley Quinn is officially gonna become my new obsession. #thankyou #iloveyou
— ○ EGO ○ (@EGO_centrik) March 7, 2014
@cassalexa Being THE Harley Quinn? Best casting decision ever. It's on in two weeks.
— David Grant (@brklynr) March 7, 2014
@cassalexa if you are #HarleyQuinn my dear, then there is definitely a God! #PerfectCasting
— Randy Q. Moore (@YourRandyQMoore) March 7, 2014
@cassalexa You're The Perfect Choice For HARLEY QUINN :D "Success"
— J Ricar Lopez (@JRicarL) March 7, 2014
:: Mini Update :: -
Comic Book Therapy reached out to the acting agency of Miss. Alexa to make any sense of this.
Cassidy Alexa is getting a lot of heat surrounding her upcoming ‘cameo’ on Arrow. I’m in the dark as to what the producers have planned for her so we’ll have to find out. She’s a very exciting young actress to keep an eye on.
I’m blessed that CW do like to hire my clients. They’ve established a solid presence on the Hollywood North landscape and look to strengthen those ties with new shows, Flash, iZombie and Tribes, which could be a worthy successor to Supernatural.”
Arrow returns March 19th on The CW