The Borderlands series has some fantastic shooting mechanics and cel-shaded graphics. With more news about the upcoming movie releasing, many fans have been revisiting the games. Of course, this means revisiting all of their question about the lore, too.

The Sirens stick out as one of the most interesting parts about the Borderlands universe. After all, what isn’t cool about dimensional-shifting, tattooed warriors? Here are some facts you might not know about Borderlands’ Sirens.

10 There Are 12 Known Sirens In History

Players might be familiar with Sirens who appeared as playable or story characters in the Borderlands games. But there are more in the lore than appear in the games. The 13 known Sirens include:

Troy Calypso, Tyreen’s twin, is often not considered a “true” Siren since his residual gifts came from Tyreen.

9 Lilith’s Mentor Remains Unknown

In the same way that Maya intended to mentor Ava, Lilith had her own guide through Siren-dom. In the comic series Borderlands: Origins, fans find out more about Lilith, Maya, and Steele who are all Sirens.

The character has practically no details revealed about them except that they know a thing or two about Sirens and, by proxy, Lilith. It inexplicably sets her on the path to being a Vault Hunter.

8 A Siren Sealed The Destroyer In A Vault

Not much is known about Nyriad – one of the only prominent Sirens from history in the lore. What players do know appears in Echo logs across Borderlands 3 and with quests on Nekrotafeyo.

But those logs detail some incredible feats Nyriad achieves including sealing the Vault of the Destroyer. Sadly, fans have little more to extrapolate from the information.

7 The Sirens Are Connected To The Eridians

In fact, Nyriad goes so far as to say that she is the Siren who murdered Eridians. Of course, the Eridians also seem responsible for the Vaults and the monsters who guard them. Remember that a Vault is what drove Handsome Jack mad and to pursue unlocking the Vault of the Destroyer.

Whether Sirens are guardians against the Eridians or just against unchecked power, they remain connected.

6 There Can Only Be 6 Or 7 At A Time

The series’ lore is inconsistent on whether six or seven Sirens can exist at any one time. The addition of Amara in Borderlands 3 previously contradicted what Handsome Jack says in Borderlands 2 about six only being “allowed to exist” at once.

However, this stipulation also supports the idea that Troy is not a “true Siren” and just leeches off of Tyreen due to them having once been conjoined twins.

5 Sirens Can (And Do) Get Addicted To Eridium

As Lilith shows time and again throughout the series, Sirens use Eridium to power up. Think of it as steroids for pseudo-magical powers, but the downside is that they can become addicted. Sadly, this is what Handsome Jack purposefully does to his Siren daughter, Angel.

Though Eridium can significantly enhance Siren powers, too much will require a constant stream for the Siren to survive. Curiously, Amara, Maya, and even Tyreen never seem to display the same hunger for the stuff that Lilith often does.

4 Lilith Sealed Herself And Elpis Inside Eleseer

Speaking of juicing Eridium to gain power, Lilith has done some impressive stuff using it. She made Sanctuary fly, defeated Vault monsters, and, in Borderlands 3, phasewalked an entire moon to save Pandora. Though it remains in question whether or not she absorbed Tyreen’s powers when she died, phasewalking a moon takes a massive amount of power.

Where else could she have gotten that power than from Tyreen? Moreover, she did something similar to what Nyriad did before her: sealing herself (and a giant monster) into a Vault to protect others.

3 Sirens Can Choose Who Gets Their Power

A has been confirmed in Borderlands 3 and by various writers, Sirens can choose who inherits their gifts. Or, conversely, they can just “send their powers out into the universe” – whatever that means. However, Sirens also retain connections to their powers and who inherits them.

Perhaps this explains why Lilith’s short-lived mentor recognizes Lilith, explains Siren-dom to her briefly, and then legit just expires right there.

2 Amara & Tyreen Are The Only Sirens Without “Wings”

Each Siren has a pair of wing-like appendages that appear when they use their powers. Lilith’s are very pronounced and appear fiery while Angel’s appear…angelic. Even Maya has a pair when she uses phaselock. But Amara’s “wings” manifest instead as her set of enormous arms with which she mercilessly beats up bad guys.

Commandante Steel could have them, but we never see her powers anyway. As for Tyreen, she turns into a huge creature but never seems to manifest wings of any kind.

1 Amara & Tyreen Are Also The Only Sirens Known To Have Siblings

This is a potentially routeless fact, but it still begs the question: why do most Sirens not have siblings? If all Sirens could potentially have a “parasite” like Troy, maybe the possibility Siren siblings are just ridiculously low.

Unfortunately, not enough is known about the characters, their powers, or even Sirens as a species(?) to draw educated conclusions. Fans will just have to wait for more lore.

NEXT: Borderlands: Every Playable Character’s Age, Height, And Birthday