Another Round Of "Guess The Antagonist!"

Questions for those of you reading Avengers vs Atlas: Who is it that will be revealed as the one behind everything, and who is the she they're searching for?

We have a rift with faces, which destabilizes time, who is looking for a mysterious "she", and has some past history with the Avengers.

For me, the "she" made me think Mantis, aka the Celestial Madonna, who was pursued by Kang for this reason, only to be thwarted by the Avengers and Rama-Tut (Kang's younger self). Then I thought it could be that Korvac guy. He trashed the Avengers and the Guardians of the Galaxy, but committed suicide (or faked it) when he sensed that the woman he fell in love with doubted him*.

Problem being neither of those stories involved the original Avengers**. Course, Kang tangled with that group of Avengers, and the Growing Man was one of his tools. For me, it stinks a bit of the Grandmaster. He would absolutely imperil the universe by messing with time to throw together a group of heroes thought to be criminals with a time-displaced squad of Avengers, just for kicks. It's no skin off his nose if the universe is destroyed, he can't die, being an Elder of the Universe and all. He also used Mantis as a hostage once, although that was against the Silver Surfer. But the Avengers do have experience with him and his fellow Elders.

Or the antagonist could be someone completely new. I'm reasonably confident the "she" will be someone we've seen before.

* Based on Wikipedia, I think he may have misjudged her. It says Carina was angered by his apparent suicide, and went after the heroes herself.

** Or would they be Avengers Version 1.1, since it's Cap instead of the Hulk. Or would you call it Version 2.0. I'd tend to apply that label to the Kooky Quartet myself, because it's such a major roster overhaul, but it's all arbitrary definitions.