10 Biggest Characters The MCU Hasn't Used Yet
3. Galactus
One of Marvel's biggest and baddest villains is the evil world eater, Galactus. Though he has not appeared in the MCU yet, it is simply a matter of time before he eventually does.
With Disney's purchase of 20th Century Fox, Marvel now has access to Galactus, the Silver Surfer, the Fantastic Four, the X-Men, and a few other characters. So, it is now a possibility the world eater could appear in Phase 5 or Phase 6 of the MCU.
Introduced primarily as a Fantastic Four villain, Galactus is too big and too bad a foe to be a one-off villain that is defeated or dead by the end of the upcoming Fantastic Four film, set to release in 2025. Since Kang the Conqueror will be the next major threat our heroes need to overcome, that will mean Galactus will be waiting in the wings for quite some time before attention could turn to him.
Sadly, the world eater will probably be one of the last characters on this list to arrive to the MCU, though it is pretty much guaranteed that he will eventually show up to cause chaos for the superheroes of Earth.