Legion fans have seen David unchained and the chaos he can create; is it possible future Syd is encouraging David to help the Shadow King in order to give the world an extra ally when her boyfriend goes rogue?
Of course, we learned from future Syd that’s not necessarily true, as she told David he killed the Shadow King in her timeline a week from their encounter.
Future Syd appeared to indicate David is alive in the future, but that things between them are “complicated.”
Whoever this threat is, they’re not around now, as even David isn’t more powerful than the Shadow King.