As an expert in comic book lore and superhero narratives, I can provide an overview of how various characters and teams have defeated Galactus, a cosmic entity in the Marvel Universe known as the Devourer of Worlds. Galactus is a powerful figure, and his defeat usually involves significant effort and unique strategies. Here are a few instances:


1. Silver Surfer and the Ultimate Nullifier: In some storylines, Galactus has been defeated by the use of the Ultimate Nullifier, a device capable of neutralizing anything, including Galactus himself.


2. The Fantastic Four and the Power Cosmic: The Fantastic Four, with the help of the Silver Surfer, have managed to strip Galactus of his Power Cosmic, reducing him to a mortal state.


3. The Avengers and the Infinity Gems: The Avengers, wielding the power of the Infinity Gems, have been able to overpower Galactus on occasion.


4. Doctor Strange and Magic: Doctor Strange, using his vast magical abilities, has managed to banish Galactus or create illusions that deter him from his destructive path.


5. The Ultimates and the Sun Eater: In an alternate storyline, the Ultimates used the power of the Sun Eater to turn Galactus into a hero, rather than a villain.


6. The Ultimate Nullifier: As mentioned, the Ultimate Nullifier is a powerful weapon that can neutralize even Galactus.

7.
The Inhumans and the Terrigen Mist: In some narratives, the Inhumans have used the Terrigen Mist to alter Galactus's intentions or abilities.

8.
The X-Men and Cerebro: The X-Men have used Cerebro to amplify their powers in ways that have affected Galactus.

9.
The Sentry and the Void: The Sentry, a character with powers similar to those of Superman, has fought Galactus and managed to trap him in the Void.

10.
The Celestials and Cosmic Order: The Celestials, a group of ancient and powerful beings, have intervened to restore cosmic order when Galactus has threatened it.

read more >>

Still in a weakened state from his encounters with Hunger, Thanos and the Fallen One, Galactus along with the Silver Surfer, was easily defeated by the Proemial Gods and handed over to Annihilus. ... Galactus would eventually freed by the actions of Drax the Destroyer.read more >>