In the Dark Dimensions Dormammu is all powerful and seperated from his power source and the life energy of Yggradsil Odin would struggle much more and most likely Dormammu could defeat the all father, although again maybe not kill him.
Galactus would easily defeat Dormammu outside the Dark Dimension, but it turns out that even on Dormammu's turf, he retains his power and has the means to grow even stronger.
Galactus would win in a fight against Dormammu. He is simply a more powerful entity whose powers can cross over even to the Dark Dimension ruled solely by Dormammu. The two fought before in the comics, and Galactus easily consumed Dormammu.
Base Thor couldn't handle Dormammu. Dormammu is stated to be sky father level and Thor is definitely not that. If we were going with Rune King Thor, the fight would be less one sided, but at that point Thor outclasses Dormammu. A better fight would have been Dormammu vs Odin or Zeus.
Surtur, the fire demon, forges a sword called Twilight which would bring about the end of Asgard and Earth. Odin perishes many times facing him and ultimately gets caught in eternal combat with the demon.
Odin is killed by Fenrir who is then killed by Odin's son Vidarr. Thor kills Jörmungandr but succumbs to the serpent's poison after taking only nine steps after the battle and falls dead.
Unable to kill his own daughter, Odin defeated Hela and imprisoned her using his own power to keep her at bay in another realm for eons. During this respite, Hela attempted to escape imprisonment in Hel and was near successful.
The Stone Age Avengers, led by Odin, were successful in defeating and burying the Mad Celestial when it arrived on Earth over a million years ago. Much later, Odin and his Greek counterpart Zeus attempted to stop the Third and fourth Hosts on Earth, but were easily outmatched.
Hela is powered by Asgard. Even pretending that it still existed, she would be no match for Dormammu, who is powered essentially by an entire dimension- which eats/absorbs entire universes. And then a bunch that aren't even in the same league, Abomination being the closest second to them.
Intangibility: As a being of pure mystical energy, he can turn intangible. Immortality: Dormammu is completely immune to aging. He had lived for thousands or even millions of years and has never aged a day.
When the two fought in the comics before, Odin managed to headbutt Galactus, only to end up severely injured and needing to return to Odinsleep to restore himself to his proper state. Galactus, on the other hand, survived the fight unscathed.
Dormammu was a dark demonic god who was imprisoned in the Dark Dimension by powerful sorcerers centuries ago. In order to escape, he trapped children in comas and stole their life force.
One of the next villains that Wanda ever faced and defeated has to be a powerful supernatural foe whom she worked alongside Doctor Strange many times to defeat, Dormammu. The villain is known as the lord of the Dark Dimension, and a longtime foe of Doctor Strange and the Ancient One.
In pursuing this goal, Dormmamu managed to power himself up drastically. Not only was he one of the most powerful magic users in the universe, but he had also become one of the most powerful entities, period. In the end, Eternity was able to defeat Dormammu easily, proving his dominance.
Loki (Tom Hiddleston) and Doctor Strange have very different forms of magic, which makes comparing them somewhat difficult, but in the end, Loki takes the crown with his mischievous skills and 1500 years of experience.
Dormammu is stronger than some Celestials like Ego the Living Planet. For example, in Guardians of the Galaxy Vol. 6 #17, Dormammu absorbed Ego completely, merging their powers. However, others like Arishem the Judge are considerably stronger than Dormammu.
Overall, none of the Eternals are as powerful as Hela. However, Druig could mind control her while the likes of Gilgamesh, Ikaris, Thena, Kingo and Makkari attack her. However, if he doesn't mind control her fast enough, the Eternals would face the same fate as the Valkyries.
Odin has pretty clearly been shown to be demonstrable more powerful than the other gods. Odin's Odinforce has far outstripped anything Zeus's magical lightning bolts have ever done.
Based on the analysis of powers, speed, strength, durability, and combat, we can safely say that Odin is stronger than Thanos and outmatches him in almost every aspect. Thanos might be among the most feared villains in the Marvel Universe, but he comes nowhere near when compared to All-Father Odin.
While Odin was strong during his prime, Thor was just naturally stronger than him. They don't call Thor the mightiest out of all of the Asgardians for nothing because he is actually a lot stronger than his father in terms of his physical capabilities.
Hela Never Really Died During Ragnarok & Thus Can Appear In Thor 4. We never really saw Hela's death in the movie. All we saw was Surtur unleashing hell on Asgard and hela getting caught in the crossfire. The ambiguous nature of her death has led fans to speculate that MCU is saving her up for Thor 4.
Hela Was Worthy Enough to Destroy Mjolnir
But the impactful scene in Thor: Ragnarok depicts Hela catching Mjolnir in mid-air before then crushing it to pieces. Odin previously told Thor the power of the Uru metal had no equal. Clearly, however, that was an overstatement, considering Hela destroys the hammer with ease.
Mjølnir was forged and created before Thor was born. We know the Dwarves forged it for the Asgardian Royal Family and was used by Odin and then Hela before Thor. We do not know exactly who it was made for or if it was made for Odin and he gave it as a gift to his firstborn, Hela Odinsdottir.