Some new photos from the set of The Wolverine 3 popped up online the other day, featuring Hugh Jackman, our first look at Patrick Stewart’s return and one unidentifiable young co-star. A new rumor may shed some light on the identity of the mysterious actress — or at least who she’s playing in the upcoming sequel — and it’s someone you’ve probably already guessed.

The Hashtag Show claims to have gotten their hands on a casting breakdown from The Wolverine 3, which is filming under the code name Juarez. Here’s what they were given by sources involved with production:

[ZOE] 12 to 15 year-old girl. Still a child, but a wounded badass, a pound puppy, raised in captivity in a time of battle, without support systems of normal childhood. She has no family and until now, has never left the compound in which she was born. She has an authentic intensity – her expressions & body language speak volumes, without words. Once released in the outside world, everything is new – every experience and every image a first. This does not mean everything is wonderful or wondrous. Some things she sees (things we might regard as conventional) may scare her or anger her and things we may find interesting may bore her. She has not been instructed in many social conventions – she can eat like an animal. She studies and often mimics people’s behavior. She has a high IQ, but is also a temperamental, impulsive and feral creature that can raise genuine mayhem. She is a girl that has never been kissed. Looking for a REAL girl - not made up or done up. Also with genuine edge, not made up or put on. Martial arts or gymnastics experience preferred but not necessary – but actress must be extremely physical and able to improvise scenes without necessarily resorting to speech. Do NOT play it “cute".

That definitely sounds like Laura Kinney, aka X-23. The actress' younger age fits not only with the rebooted X-Men universe, but also with the comics, as Laura originally escaped captivity at the age of 13.

Nothing has been officially confirmed, but recent comments from Bryan Singer have also supported rumors that X-23 will appear in an upcoming X-Universe film. The Wolverine sequel seems like the most likely candidate, particularly following the post-credits scene in Apocalypse, which teased the introduction of Essex Corp. and Mr. Sinister, and featured a vial of Logan’s blood — something they’d need to create his young female clone, obviously.

James Mangold is directing The Wolverine 3, which also stars Richard E. Grant as a mad scientist, Boyd Holbrook as a corporate security enforcer, and Stephen Merchant, Elizabeth Rodriguez and Eriq LaSalle in unspecified roles. The sequel is set to hit theaters on March 3, 2017.