Arrow Season 6: Katie Cassidy's Black Siren Will Be a Series Regular

Over the course of nearly five seasons, The CW's Arrow has built up a vast bench of characters. Not only have many of them moved on to headline their own spinoffs, but they regularly pop back up on the show that kicked things off in the first place. Sometimes, in fact, Arrow even features characters from other networks, like Constantine, or other mediums, like Vixen when she made the jump from animation to live-action. Even the death of a character doesn't spell their end, as comics have long proven it's not the finale it is in real life.

Both White Canary and The Atom came back from apparent death to go on to help lead the crew on Legends of Tomorrow, and even Oliver's sister Thea was once deceased for a time. Flashbacks have also allowed characters like Tommy to pop back up, while dream sequences have allowed Oliver to reunite with his late parents. Sometimes, though, we're merely treated to a different version of the character. When The Flash opened the doors to multiple Earths, it also allowed actors like Katie Cassidy to play different versions of themselves. On Earth Two, she's the Black Siren, a metahuman with a much darker edge than the Black Canary and a sonic cry of her own. Earlier this season, she popped up on Arrow to cause trouble for our friends and test Oliver's resolve, and it looks like we haven't seen the last of her by a long shot.

EW spoke with executive producer Marc Guggenheim, who announced that Katie Cassidy would be returning as a series regular next season on Arrow, but this time as Black Siren:

“One of the things that most excites us about Arrow is that we go where the story takes us. Last year, the story took us to the tragic death of Laurel Lance. This year, our midseason finale reintroduced us to Laurel’s doppelgänger, Black Siren. We were so taken by Katie’s fearless interpretation of this character that we knew her story was not yet finished. We couldn’t be more thrilled to welcome Katie back to Arrow as Black Siren, though as her appearances on Arrow and DC’s Legends of Tomorrow this season show, she never really left the family.”

The Flash Black Siren Earth-2

While it was safe to assume the character would be back, it's surprising that she'll be a regular player next season. Many thought Siren's initial introduction would be a way to give Laurel her comic powers, but then this season of Arrow brought on Dinah Drake as a metahuman, ready to take the Black Canary's place. The more interesting bit of the quote is that the version of Laurel we heard would appear in the Legends finale will be Black Siren, and not some past version of our Laurel. That should make things extra complicated for her sister Sara, when she's forced to confront an evil doppelgänger of her dead loved one. As for how Black Siren will return, Guggenheim hinted her path has already been laid out in her last appearance:

“The episode ends with laying a very specific seed with a very specific game plan on our part that we hope to see come to fruition."

With the Legends finale premiering soon, we should have a better idea of Black Siren's role in the Arrowverse moving forward. Meanwhile, she won't be the only rogue escaping ARGUS custody, as Captain Boomerang was recently announced to be returning soon. Even more worrying, but Deathstroke may be coming back to the show before the season ends, spelling more trouble for our heroes. We'll keep you posted on the future of Black Siren and all things Arrow, so stay tuned.

NEXT: Arrow's Felicity Smoak is Becoming a Superhero

Arrow continues next Wednesday with ‘Disbanded’ @ 8pm on The CW.

Source: EW

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