Last night, during the college football national championship game, Marvel finally unveiled the second full-length trailer for Avengers: Age of Ultron, which offers plenty of new footage that wasn't shown in the first trailer from last October. One of the biggest mysteries in this new trailer is the brief appearance of a woman disrobing in a cave, who hasn't been shown before in any of the previous footage, along with another woman who is seen behind Thor (Chris Hemsworth) as he is shocked by what appears to be some sort of electric spark. Who might these women be? There are a few theories floating around the web already, so let's break them down right here.

Who Is The Woman In the Cave?

Cave Woman

1 Wakandan Dora Miljae

Avengers Age of Ultron Dora Miljae Photo

If this theory is true, it would be an obvious reference to the upcoming Phase Three adventure Black Panther starring Chadwick Boseman, who will make his first appearance in next year's Captain America: Civil War. In the Marvel comic books, the Dora Miljae are a group of female warriors who serve as the personal bodyguards for T'challa. They are some of the most formidable fighters in the Marvel comic universe, destroying Doombots and even holding their own against Black Widow. Kevin Feige has previously teased that Black Panther's homeland of Wakanda will be featured in Avengers: Age of Ultron, leading many to speculate that this mysterious character is actually in a vibranium cave, which contains the metal that Captain America's shield is made of.

Who Is The Woman Attacking Thor?

Avengers Age of Ultron Woman Attacking Thor Photo

1 Moondragon

Avengers Age of Ultron Moondragon Photo

The new trailer is cut together to make it look like one of Ultron's red electronic beams strikes Thor in a completely different shot, but, if you look closely, a woman is seen behind Thor, who may be possible for this attack, especially considering Thor is hit with blue electronic beams. One theory is that this woman is Moondragon, who, in the comics, is a powerful telepath and martial artist, who has been connected to Thor and the Mad Titan himself, Thanos.

What do you think about all of these theories? Who do you think these mysterious women are in Avengers: Age of Ultron? We likely won't know any more for sure until this highly-anticipated sequel hits theaters on May 1, but you can chime in with your own theories below.