Given their stardom, I imagine if either of them were to join the Dark Universe, it would be as the main protagonists.
Both Jennifer Lawrence and Michael Fassbender co-starred in the X-Men “First Class” trilogy as Mystique and Magneto, respectively.
Separately, Jennifer Lawrence rose to fame playing Katniss Everdeen in the Hunger Games series, while Michael Fassbender has sunk his teeth into blockbusters like Prometheus, Alien: Covenant and Assassin’s Creed.
On the flip side, I could see Fassbender playing an interesting version of The Wolfman.