Agents Of SHIELD: Where Each Character Could (Possibly) Appear Next
1. Fitzsimmons - Ant-Man 3
While fans were frustrated that he missed Season 7, Fitz spent his time offscreen mastering the Quantum Realm. He uses his mastery of the miniscule to bring the agents, along with the enemy Chronicoms, back to the prime timeline.
Using the Quantum Realm to time travel has been done in the MCU before. Specifically, it was how the Avengers time travelled in Endgame. The idea of navigating the Quantum Realm through time comes from an unexpected source: Scott Lang.
With the Quantum Realm expected to play a larger role than ever in the third Ant-Man film, perhaps Scott, Hope, Hank, and Janet need some help understanding the microscopic universe. Though Fitz and Simmons are retired and raising their young daughter Alya, a cry for help from the legendary Hank Pym could bring them back for one last big, er, small mission.