Omnipotent(ial) Thanos is immensely strong and resistant to injury, invulnerable to nearly all types of poison, disease, and telepathic attack. He also has incredible psychic abilities; he can sense things several star systems away.
While Thanos has demonstrated a strong combat capability, dismantling Hulk in a series of rapid, well-aimed punches in Infinity War, taking into account Goku's Ki, transformations, and absolute refusal to give up until he's given it his all, Goku comes out on top.
Thanos and Hulk have clashed several times in Marvel lore, with Thanos even admitting he was scared to face the Hulk before acquiring the Infinity Stones. While Thanos is usually the victor, it's generally down to him using superior tactics and technology, rather than simply possessing greater physical strength.
Demonstrating enormous superhuman strength, speed, stamina, immortality and invulnerability among other qualities, Thanos can absorb and project vast quantities of cosmic energy, and is capable of telekinesis and telepathy.
Thanos was born to A'Lars, a member of the Titans, a race of powerful, god-like beings that evolved on the planet of Titan. He belonged to the royal family of Titan and was the adoptive brother of the Eternal Eros, who eventually left Titan.
Portrayed by Anthony Hopkins, Odin is the powerful ruler of the Nine Realms who has sworn to protect every kingdom under his rule. With Odin still ruling Asgard, Thanos would have easily been stopped had he made a play for the Infinity Gauntlet.
Who would win in an MCU fight: Odin or Thanos? Without the Infinity Gauntlet, Thanos stands little chance against Prime Odin. Odin is stated to be able to shatter the Earth.
While the upgrades give Juggernaut the powers to kill Thanos with ease, it comes at the sacrifice of the former villain, as Juggernaut is abandoned after the Mad Titan is taken down, as no attempts are made to save him as he accelerates through space.
Although he is an extremely skilled marksman, Clint Barton is often considered to be the weakest member of the team seeing as he's just a regular guy with a bow and arrow. That certainly means that Hawkeye one of the weakest Avengers.
Thanos would probably decimate Deadpool over and over, but with the merc's regenerative ability it would only be a matter of time until Deadpool strikes the final blow and wins this bout.
Thanos Feared an Attack From Odin and He Might Have Been Planning One. However, it's possible that Odin kept his kids in the dark because he was preparing to take on Thanos all along.
Thanos doesn't have enough firepower to put Beerus down for good. Thanos might be known to destroy planets and solar systems with effort, Beerus can destroy solar systems with ease.
The battle between Saitama and Thanos was intense and destructive, but ultimately, Saitama's immense strength and speed proved to be too much for even the all-powerful Thanos with all six Infinity Stones.
One of the most physically powerful X-Men, Colossus is a force to be reckoned with. He would be able to put up a good fight against Thanos and even get close to beating him but he wouldn't be able to keep Thanos down and that would be a problem.
With enough preparation, Apocalypse would have a surprisingly decent chance at beating a Gauntlet-free Thanos. Apocalypse has trained and fought wars for centuries, mastered many forms of combat and magic, and all of that could very well be enough to topple Thanos, especially if he didn't have the Infinite Gauntlet.
Summary. Galactus shows he can defeat Thanos, even with the Infinity Gauntlet, with the right amount of prep time in Silver Surfer Rebirth: Legacy #5. Galactus is one of the most powerful beings in the Marvel Universe, with very few peers, such as the Living Tribunal and the One-Above-All.
While Thanos is an Eternal and has the standard powers of super-strength, agility, regeneration, immortality, and more, Adam Warlock takes the upper hand. He can be killed, but he resurrects to be stronger every time.
Against Dormammu, Thanos without the Infinity Stones is already dead; it's only a matter of time. But Thanos with the stones? It all depends on where the battle is fought. In the Dark Dimension, Dormammu can win nearly any fight.
As it stands, Batman alone is helpless against cosmic level threats, much less against Thanos. Really, the best thing he could do is to ask for the Hellbat armor from the Justice League so he can survive Thanos' physical attacks. Even then, he'll still lose.
Hela is Thanos' superior in every way. Her power set is much more versatile. While Thanos would have to get within combat range to damage her, she could attack from a distance with her blades. These blades were capable of effortlessly piercing through Uru.
