A new Avengers: Doomsday theory explores how the Fantastic Four might travel to Earth-616.
It suggests Reed Richards uses Galactus’ ancient ship tech, combined with his own inventions, to build multiversal transport and rescue Franklin Richards from Doctor Doom’s grasp.
How Reed Richards cracks multiverse travel in Avengers: Doomsday and why
Reed Richards designs an inter-universe transportation during the course of The Fantastic Four: First Steps. That’s what he uses to transport Galactus to a different corner of the universe.
But after that, Galactus’ ship Taa II was lying dormant in Earth’s orbit. So, it’d be safe to assume that Reed would gain access to it to explore ancient technology that could be billions of years old. In the movie, Reed says he needs 10 years to study its systems. But the post-credits scene takes place four years later, which could suggest that Reed may have spent that time analyzing Galactus’ technology.
According to a theory by New Rockstars, Reed likely combines his own transportation and faster-than-light travel technology with the ancient systems aboard Galactus’ ship to enable multiversal travel. The film confirms that Reed had previously built a teleportation bridge capable of moving objects across vast interstellar distances. His chalkboard also includes speculation about the bridge opening portals to other dimensions.
New Rockstars notes that Reed had already mastered wormhole travel via the Excelsior ship’s FTL engine and routinely tracks cosmic signals. He also possesses a comprehensive star map and cosmic observation tools. These details support the idea that he could integrate cosmic-level technology from Galactus’ ship to expand his reach beyond Universe-828.
The theory further suggests Reed’s motivation to enter Earth-616, which may stem from Doctor Doom’s possible kidnapping of Franklin Richards. That’s how and why we see the Fantastic Four’s ship in Thunderbolts*’ post-credits scene.
Avengers: Doomsday features Universe-828 and includes scenes set in the Baxter Building. So, according to New Rockstars’ theory, this setup allows the Fantastic Four to travel to Earth-616 using enhanced multiversal tech built from Reed’s inventions and Galactus’ ship. Alternatively, the Avengers could also use America Chavez for the same. But we’ll find out more when Avengers: Doomsday hits theaters on December 18, 2026.
Originally reported by Anubhav Chaudhry on SuperHeroHype.
