Monday's release of the second Avengers: Age of Ultron trailer has left more than a few questions for inquiring minds. Most notably, the identity of the mysterious woman in the cave.
While it's purely speculation at this point, there are two prominent possibilities:
Shuri: From a distance the headgear appears to have a feline shape. With T'Challa set to debut in Captain America: Civil War, it wouldn't be out of the realm of possibilities for groundwork to be laid in Age of Ultron. An appearance by T'Challa's younger sister and future Black Panther Shuri would certainly provide said groundwork.
Ulysses S. Claw was featured prominently in the previous trailer as well as this one.
The super villain has a long history with the Wakandans in the comics given that he assassinated T'Challa and Shuri's father, T'Chaka. The princess tracking down her father's murderer would be an excellent setup for Civil War as well as 2017's Black Panther.
On a related note, this individual could also be....
Dora Milaje: The Dora Milaje are the personal bodyguards of the Black Panther. They are extensively trained and highly skilled martial artists and with various weapons. They are some of the fiercest warriors in the Marvel Universe. In the comics they have slain Doombots with ease and battled Black Widow to a stalemate.
It's probably safe to say that Wakanda will be well represented when Avengers: Age of Ultron hits theaters on May 1.