"A lot of this story picks arc from the Dark Angel Saga from Uncanny X-Force, though it's not a sequel. We've spent a lot of time incorporating Kang and also Thor into Apocalypse's mythology. The fun of Uncanny Avengers is the A meeting the X in a big way. You don't need to have read the Dark Angel Saga to understand this, but if you have, here's where that picks back up. In that story, Archangel impregnated Pestilence. Whatever she gives birth to is going to be a problem for people and also involve Kang's machinations and scheming."