Apocalypse. Apocalypse makes his way into this position on the list because he is technically stronger than the Hulk.
Apart from the color difference, the Incredible Hulk is also stronger than his gray predecessor. This Hulk also gets stronger the angrier he becomes which means he had no limit to his strength. He proved this assertion in 1966's Tales To Astonish when he fought the supremely strong god Hercules to a standstill.
The Immortal Hulk
The reincarnated Hulk discovers that his power and the power of all gamma-irradiated beings like the She-Hulk comes from a being called The One Below All, and he leverages this knowledge to become the strongest Hulk in the comics in many respects.
So, there you have it. Thanos beats Hulk every time, with or without the Infinity Gauntlet. But World Breaker Hulk defeats Thanos. However, Thanos could beat the Hulk if he had the Gauntlet (He could wipe out the Universe).
Before he can defeat him, the Immortal Hulk is stopped by the Savage Hulk, who is being emotionally manipulated by the Leader. The Immortal Hulk is beheaded by a monstrous Leader and his heart is ripped out. His corpse, alongside Banner, is taken to the Below-Place by the Leader.
Abomination – Emil Blonsky. A gamma-spawned monstrous powerhouse. The Hulk's primary physical rival.
10 Thanos The Mad Titan Is Too Much For Hulk
Every time he has stepped up to the Mad Titan, Hulk has gotten his butt handed to him. But in his defense, Thanos usually has the Infinity Gauntlet, a Cosmic Cube, or some sort of powerful object at his disposal when they fight.
Whether it was magic-wielding sorcerers like Doctor Strange or entire teams like The Avengers, almost nothing can get in Hulk's way when he's on a rampage. Though he has beaten the best of the best, only his biggest victories left readers stunned at the sheer power of Bruce Banner's alter ego.
Few characters can stand against him, with only a few being so brave and some being very foolish. While the MCU Hulk was not able to defeat Thanos, his comic book counterparts pose a better chance to make an even fight particularly if Thanos does not wield the Infinity Gauntlet.
Thor, the god of Thunder, was undoubtedly the most powerful member of the original Avengers. His power continues to grow in the Marvel Cinematic Universe.
Even if Hulk does manage to land a punch to Thor, being a god he can take it and keep on going. All in all said, Thor was a whole can defeat Hulk. A large part of that is being able to wield Mjolnir. Hulk cannot keep up with or match Thor when fighting with this might weapon.
Thanos Beat Hulk Because He Was A More Skilled Fighter
This physical power does show itself in Avengers: Infinity War's opening as Hulk has a moment where he does overpower Thanos, but the fight quickly goes in the other direction.
Strength Level: The Hulk possesses superhuman strength of the Class 100 level, enabling him to lift (press) in excess of 100 tons. The Hulk only attains this strength level when he is enraged. In a totally, calm state his functional strength is significantly less, perhaps in the 70 ton range.
The Avengers and Fantastic Four died to stop him. During that ultimate sacrifice, Hulk also died. Jean Grey shut down Bruce Banner's brain, turning Hulk into a savage. The two ended up separated, and Hulk ended up in an irradiated cocoon, one that killed Hulk completely, which led to a new Hulk being horn.
Rising to his feet, Hulk backhands the Son of Zeus, before pummeling the Greek god into submission as he begs Hulk to stop, trying to convince him that they're there to help. Namora covers her eyes, unable to watch any more of the brutal beating.
He dug deep into Hulk's psyche and found the one person Hulk feared most -- Brian Banner.
The Hulk has been called the strongest Avenger given his unparalleled, planet-shattering strength, but within the 2099 future of Marvel and DC's crossover universe, the Hulk would be considered the weakest Avenger (for one specific reason).
While the Hulk has god-level powers and strength, the hero is not an official god in the same way Hercules, Thor, Knull, or the Jade Giant's own god-like being, the One Below All, are.
In the debut, Lee chose grey for the Hulk because he wanted a color that did not suggest any particular ethnic group. Colorist Stan Goldberg, however, had problems with the grey coloring, resulting in different shades of grey, and even green, in the issue.
In the modern Marvel Comics, The Grandmaster and the Hulk are BOTH immortal.