In short, in a straight-up battle, Dr.Manhattan could easily destroy Superman. All he would have to do is disintegrate him and no matter how powerful Superman might be compared to other beings, Dr. Manhattan is simply too powerful.
In Doomsday Clock, Manhattan feared Superman would destroy him. If Superman possessed this power in the main DC Comics continuity, surely Darkseid, in his strongest form, would be powerful enough to destroy Dr. Manhattan, especially with the forces of Apokolips at his heels.
Fans who are left wondering "who can defeat Dr. Manhattan?" have only to look towards the character known as The Beyonder, who is largely considered to be one of the most powerful beings in the Marvel Universe.
Thanos should not be underestimated in any fight, but unless he's wearing the Infinity Gauntlet or has a literal sack full of Cosmic Cubes, he isn't beating Dr. Manhattan. Without the aid of any super powerful objects, or pants for that matter, Dr. Manhattan could easily snap Thanos out of existence.
Yes. Doctor Manhattan is a very potent character, but there are versions of Thor that are described in terms that are just as ridiculous. There are even versions of him that could make an interesting fight of it against someone like Manhattan completely alone.
Dr. Manhattan, period. He can simply disassemble the very structure of Hulk so that he no longer exists, I mean, the dude is nigh-omnipotent and easily multiversal, Hulk is at best a star buster, Dr. Manahattan can destroy and rebuild universes.
Odin is insanely powerful, but we have seen him die in comics and movies. Whereas Dr. Manhattan transcends time and space in a way few other comic book characters do. He exists purely because he wants to, and so long as he does he will always win.
Dr Manhattan can defeat any avatar of Darkseid all the way. But if we're talking about the True form Darkseid Or Infinite frontier Darkseid, things will be difficult and complicated.
Everybody knows that all good superheroes have a secret weakness, so even the godlike Doctor Manhattan had one, too. To put it in Superman terms: Tachyons are his kryptonite. And on Watchmen episode 8, we see the flaw put to use once again.
Back to the present day, Doctor Manhattan returns to Earth and ponders that he is a being of inaction on a collision course with a man of action (Superman), and to this universe of hope, he has become the villain.
As powerful as Cosmic Ghost Rider is, Immortal Hulk would destroy him. Castle couldn't do anything that would actually kill him, which would give Immortal Hulk time to destroy his foe.
With just the flick of a finger, Thanos could make Galactus disappear in an instant. With the might of all the Infinity Stones and his natural strength, Thanos is nearly unstoppable, and arguably no single hero or villain in the Marvel world could defeat him alone.
Superman is afraid of Martian Manhunter and his abilities because he understands just how powerful he can be at full strength. The Man of Steel truly respects Martian Manhunter's powers and won't ever underestimate him in battle.
Batman is pretty smart, but there's no way he can match Dr. Manhattan's just about unparalleled knowledge of physics, astronomy, and molecular science. On top of that, Manhattan's unique way of viewing time gives him knowledge of the future, which Batman has no access to.
Naturally, Superman fears death like most people, but his battle with Doomsday is especially traumatic when considering his powers. Superman is nearly invulnerable to physical attacks, so having had a being beat and stab him to death is even more unnerving, despite Superman's eventual resurrection.
Manhattan isn't just the most powerful superhero in the Watchmen story, he may be the most powerful superhero ever. Alan Moore and Dave Gibbons's Watchmen comic has inspired countless other comics ever since its release in 1986.
Dr Manhattan has partially no weaknesses and has universal levels of power. He is also able to move at 87 quadrillions times the speed of light, warp time, space, and reality. He can sense the past, present and future. He is not limited in any way physical or otherwise (he is an entity much like god).
Nigh-Omnipotence: Jon's "intrinsic field" was removed due to an accident that sent his atoms flying, leaving him with barely enough control over his DNA structure. Over time, he was able to re-evaluate his physiology and become Doctor Manhattan, a quantum being of nearly unlimited power.
Boomstick: This was a super-difficult dual to deduce, but in due time Doctor Manhattan could spell the doom of the Herald of Galactus. In fact, he made the Silver Surfer look tachyon in comparison. Wiz: The winner is Doctor Manhattan.
In a Zeus vs Thor scenario, Zeus would probably end up the victor, but the same goes for his son, Hercules. Technically speaking, he's only a demigod, but, if any biceps could outsize Thor's, then it is the Herculators.
One Above All is the creator God of the Marvel Multiverse and is the single most powerful character in the Marvel Universe. This mysterious supreme being hasn't appeared in any of the MCU movies so far but captivated many Marvel Comic fans. One Above All is an omnipotent being and his weapon is love.
Manhattan likely wouldn't hold a candle to Galactus. The biggest argument in favor of Manhattan in this fight is that he took out Pandora, a cosmic entity in DC Comics, so he could theoretically do the same with Galactus. However, Galactus can wipe out multiple star systems if he is hungry enough.
Fans love to debate who'd win a fair fight - Superman or the Incredible Hulk. In the past, the Man of Steel has won over the Green Goliath, however in a surprising moment, DC confirmed that Marvel's Green Goliath is absolutely capable of killing their flagship characters.
Despite his immense power, the Hulk has been defeated by heroes like Wolverine, Iron Man, Puck, and the Punisher. Spider-Man, Fantastic Four, and the Thing have also managed to take down the Hulk using their intelligence, teamwork, and unique abilities.
