What Is Gotham City Sirens in ‘Harley Quinn’?

'Harley Quinn' What is Gotham City Sirens(1)

‘Harley Quinn’ show just aired its season four finale, and it was probably the best episode of the season. We learned so much about the characters, and the last scene of the season really opened up doors for new storylines, especially after the rumors of season five. Harley and Ivy are finally working together, while Batgirl decides to leave the Bat Family and work outside the strict rules her previous group entailed. In this article, we will discuss what is Gotham City Sirens and if there is any reference to a similar group in DC Comics.

Gotham City Sirens is a newly formed group that includes all-female vigilantes and villains of Gotham City – Harley Quinn, Poison Ivy, Batgirl, and Catwoman. The group was formed at the end of the season four final, “Killer’s Block,” where we learn that Nightwing’s body disappeared and that Catwoman returned to Gotham City. Interestingly enough, this group resembles a few notable teams from DC Comics, mostly Birds of Prey.

Superhero/supervillain groups are always present in the comics, but there are instances where villains and heroes combine their powers to reach the common goal – in this case, to protect Gotham City. We will discuss the show’s history with teams and mention a few interesting facts about the characters. If you’re interested, stay with us until the end.

Gotham City Sirens is the new team formed by Harley Quinn and Poison Ivy

Season four of ‘Harley Quinn’ show aired its last episode, which was chaotic on all fronts. Ivy and Harley went on another adventure to stop Lex Luthor after most of the villains didn’t hold the villain accountable for his actions.

Ivy becomes the CEO of Legion of Doom but feels Lex was let go easily and not punished for his actions. On the other hand, Harley seeks revenge for Joker shooting her friend Batgirl in the back, paralyzing her from the waist down.

The whole finale sees some great teamwork by Harley and Ivy, with Batgirl showcasing her hacking skills, which proved to be valuable against Lex Luthor and his Buzz Lightyear cosplay (he really looked like a ‘Toy Story’ character).

However, what really “upped” the episode was Bruce Wayne’s release from prison or at least his arrangement for his release from Blackgate Prison.

‘Harley Quinn’: What is Gotham City Sirens?

After having a huge storyline in season three, Batman spent season four in prison after accidentally causing a zombie apocalypse in Gotham. Seeing that Gotham is getting destroyed, Bruce decides that Gotham needs Batman. This wasn’t the only important detail from the season finale because we saw the return of Catwoman.

Catwoman had a bigger role in the show’s previous seasons, most notably in season two, when she was part of the Cobb Squad, and in season three, when she was quite close with Batman.


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By the end of season three, Catwoman leaves Gotham and Batman, who is left heartbroken by the charming thief, so Selina’s return to Gotham is quite significant. Three days after Harley and Ivy defeat Lex and save Superman, the couple is invited to the cemetery, where they meet Barbara Gordon.

The former Batgirl tells the couple that she felt useful with her hacking skills despite being paralyzed and announces she left the Bat Family. Ivy is confused as to why Babs would invite them for that announcement, but the girl herself is confused by the invitation.


This is where Catwoman reveals herself and where the women realize that Nightwing’s grave has been robbed – his body is gone. After being asked what brought her back to Gotham, Catwoman remarks that the Gotham City sirens called her back.

This is where Harley decides Gotham City Sirens will be the name of their group and that their new mission is to discover what happened to Nightwing’s body. Funnily enough, Babs suggests the name Birds of Prey for the group, which is a direct reference to the famous all-female group of vigilantes from Gotham City.

Let’s discuss this a bit more.

All members of Gotham City Sirens were part of the Birds of Prey at one point in DC Comics

Interestingly enough, the reference to the popular female group isn’t a coincidence because they all were part of the Birds of Prey at one point in DC Comics.

The original members of Birds of Prey consisted of The Oracle (Barbara Gordon) and Black Canary (Dinah Lance), but Gail Simone started the trend of adding new members, including the Huntress (Helena Bartinelli).

Of course, as the years passed, more members entered the notable group, including the aforementioned Catwoman, Harley Quinn, and Poison Ivy.

‘Harley Quinn’: What is Gotham City Sirens?

Catwoman mostly cooperated with the Birds of Prey group on a few missions, but during the ‘Birds of Prey: Manhunt’ mini-series, Selina was even the group leader.

Harley Quinn cooperated with the group as a member of The Secret Six team but became a full member of the notable all-female group in the new ‘Birds of Prey’ comic book run from 2023, written and drawn by Kelly Thompson and Leonardo Romero.


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Poison Ivy was recruited to the team during the New 52, and the other members didn’t like her addition to Birds of Prey. However, after the reveal that Ivy joined the group to manipulate her colleagues for her own goals, Dr. Pamela Isley leaves the team.

Barbara’s suggestion for the Birds of Prey’s name was a cool reference to DC Comics, and other women dismissing the name because they aren’t bird-themed heroes is even better.

At first, that was the “rule,” but as time passed, even the new members didn’t have to be “bird-themed” vigilantes.

Season five of ‘Harley Quinn’ show will be interesting, with Gotham City Sirens arriving to the fray after the Cobb Squad in season two and then fighting a potential new antagonist, Talia al Ghul, and the League of Assassins.

What are your favorite members of Birds of Prey? Let us know your thoughts on Gotham City Sirens in the comments below!

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