Thanos's power, cunning, and years of experience have allowed him to outsmart and defeat some of the most powerful beings in the universe. All manners of beings have fallen before Thanos and while the Avengers are powerful, if Thanos really put his mind to it, he could end the Avengers at any moment.
Moon Knight's power level is often up for debate, but every night he demonstrates that he is capable of taking out each of the Avengers.
Thanos announces his goal of destroying the universe as it is and using the stones to create a new universe, one that's truly grateful for the life he had given them, realizing that leaving half of the universe alive is a mistake his future self committed and that there are those who will still resist.
Hulk has traditionally been seen as the strongest Avenger physically — and for good reason, though he's been subdued by both Iron Man and Thor.
There are few beings in the universe Thanos is scared of and the Hulk is one of them. There's a good reason for this, Hulk's strength is potentially limitless. One of the things that makes the Hulk so dangerous is that if you can't take him out quickly, you're never going to take him out.
Able to regenerate from any and all injuries, including death, Craig Hollis is unable to die and therefore dubs himself Mister Immortal, vowing to fight crime. With the two-dimensional Flatman, they form the Great Lakes Avengers in the Wisconsin area, despite lacking official Avengers sanction.
Tony Stark is the smartest of them all, having been responsible for some of the most incredible inventions to have ever graced the Marvel universe, including the Arc Reactor and one of the most sophisticated artificial intelligence systems known to man.
The Hulk has displayed on many occasions a nearly invincible exterior, and strength that can match almost the best the Marvel universe has to offer. Strength-wise, he is beyond class 100 strength (strong enough to press 100 tons). This dude's destroyed meteors the size of Earth with his fists.
Steve Rogers Betrays Everyone
At the start of AVENGERS: STANDOFF! (2016), Rogers no longer had the Super Soldier Serum in his blood, which made him appear older than ever before. However, during that series, Kobik—a physical manifestation of the reality-altering Cosmic Cube—turned Rogers back into his younger self.
Doctor Doom and the Beyonders
In a scheme against the extra-dimensional Beyonders, Doom even worked to destroy every Molecule Man in the Multiverse. With every Molecule Man's death, his universe would be destroyed as well.
At Comic-Con 2022, Marvel Studios' Kevin Feige made official what many fans had been theorizing for some time: Kang the Conqueror is the MCU's next Thanos-like villain.
If Superman had no weaknesses at all, no Avengers would have a chance in front of him. While Superman is known for his incredible strength, speed, and other superhuman abilities, there are a few Avengers who could potentially give him a run for his money.
Captain Marvel is the most powerful and powerful Avenger in the Marvel Cinematic Universe (MCU). Her incredible powers and determination have made her a valuable member of the Avengers.
But after the release of WandaVision and Doctor Strange in the Multiverse of Madness, it's pretty clear that the Scarlet Witch is among the most powerful. Wanda Maximoff has never truly been defeated, only "losing" to the combined forces of Doctor Strange, Wong, and America Chavez after realizing the error in her ways.
Kang is stronger than Thanos, with the Conquerer being much more challenging to defeat than the Infinity Gauntlet-wielding villain.
United States. The United States of America is a North American nation that is the world's most dominant economic and military power.
Hercules is so strong, he can lift or press more than 100 tons, making him one of the strongest superheroes in the Marvel Universe. Hercules is also an Olympian god, meaning he's immortal. He can be wounded in battle, but he won't die by conventional means.
While Quicksilver is often thought of as the fastest of the Avengers, one hero fans know from the movies can actually outrace him when they need to. Many heroes possess enhanced speed, but Pietro Maximoff is generally considered Earth's fastest man (at least in Marvel Continuity).
Apart from his physical abilities, Peter is an intellectually-gifted scientific teen genius and has a prodigious aptitude in the physical sciences, with a high IQ level of around 250.
Steve Rogers (Captain America)
The First Avenger and the original holder of the Captain America mantel is one of the oldest members of the superhero group. In his true all-American fashion, the star-spangled Avenger was born on July 4, 1918, making him 104 years old.
Selene is the oldest known human mutant. Functionally immortal, her millennia-long life is attributed to her ability to drain the life essence from other beings to extend her own existence indefinitely. Her name derives from the ancient lunar goddess Selene, daughter of the Titans Hyperion and Theia.
The most powerful and iconic mutant hero of the Marvel Universe who is also immortal is Wolverine, aka James Howlett. Born in the 19th century in Alberta, Canada, the mutant hero has the ability to heal from most injuries, expanding his lifespan greatly to give him a form of immortality.