Filmmaking is a very collaborative process. A movie evolves as it goes through the stages of production and things tend to change often. A line may be cut from the script, a cool shot may be cut from the theatrical version, or a character may be cut from the whole thing all together. And following the world premiere of ‘Avengers: Age of Ultron’ last night, it might seem that the last scenario may apply.

According to Entertainment Weekly, a mystery woman that has been spotted in promotional material for the upcoming Phase Two film from Joss Whedon been left on the cutting room floor. First, I know what you’re thinking: “Mystery woman” could apply to a lot of people at this point. Are we talking about the woman seen in the first trailer in Avengers Tower? Are we talking about whoever Julie Deply or Linda Cardellini are playing? Actually, in this particular instance, we’re referring to the dark-skinned woman disrobing in a cave that we saw in the trailer released in January. If you don’t feel like going back and watching the trailer, here’s a screenshot showing you who we’re talking about:

As fans tend to do, many formed theories about who this person could be. The popular theories were Black Panther’s sister Shuri or the “bride” of Ultron Jacosta, but neither is correct. Apparently, this woman had something to do with Thor in some way. However, since the God of Thunder’s storyline in the film that leads him to this cave is apparently ”a bit of a head-scratcher”, the subplot was “seriously truncated” and the character was cut out.

Will we ever find out who she is? Chances are that if she played such a small part that it didn’t matter if she stayed in the film or not, I doubt we’ll ever know, but maybe the answer lies in the Blu-ray special features for the film. For now, her identity will have to remain a secret.

‘Avengers: Age of Ultron’ starring Robert Downey Jr., Chris Evans, Scarlett Johansson, Chris Hemsworth, Mark Ruffalo, Jeremy Renner, Elizabeth Olsen, Aaron Taylor-Johnson, Paul Bettany, and James Spader assembles in theaters on May 1, 2015.