Tyrant

Simply put it, Tyrant is one of the supervillains created and bestowed by Galactus with his own power. A living machine, he was the herald for the devourer of worlds, until he rebelled and wanted to conquer the universe for himself. So powerful he is that at one time he captured some of the strongest superheroes in the Marvel universe, including in here the Silver Surfer, Beta Ray Bill, and Gladiator.

He wields such great powers that even Thanos himself was forced to flee in order to avoid a humiliating defeat, his allies already losing in the face of Tyrant.

So what kind of powers does he possess? Being infused with the power of Galactus, Tyrant was able to do anything he desired. From cosmic awareness and divine powers to invulnerability and immortality, he literally had it all. So he was second only to Galactus himself. When these two fought the final battle, Tyrant used his ability to manipulate any kind of technology and take control over his creator’s ship, thus syphoning the latter’s abilities.

Only when the Ultimate Nullifier was activated Tyrant was killed, destroyed at the same time with the ship of Galactus. Though it isn’t certain that he was actually killed.