10 Fantastic Four Villains MORE Powerful Than Galactus
3. Molecule Man
After being irradiated by a particle generator's beam, Owen Reece was able to control matter on a molecular level. Or so he believed.
In reality, the accident that turned Reece into Molecule Man opened a doorway to The Beyond Realm where any thought became reality.
Basically, Reece could do anything he wanted. He can disintegrate seemingly indestructible objects like Captain America's shield, Wolverine's skeleton, or Thor's hammer. Not only can he destroy any object or person in an instant (including someone as mighty as Galactus), the Master of Matter can create entire realities with a thought. When he learned several universes had collapsed, Molecule Man repaired them with no effort.
However, this power came with a price. Being exposed to the The Beyond Realm turned Molecule Man into a "universe bomb". If he dies, his entire reality will perish. When a Molecule Man died in one reality, it imbalanced the multiverse, nearly undoing the multiverse.
Thankfully, Reed Richards reset Reece's powers, so his essence is no longer tied to his corresponding universe. Nevertheless, he is still one of the most overpowered beings in existence.