Galactuswill soon make hisMCUdebut in the upcoming filmFantastic Four: First Steps, which is pretty grim news for the residents of the Marvel Cinematic Universe. Galactus is the Devourer of Worlds, after all, meaning the Earth (or any planet) is never truly safe so long as he exists. However, that shouldn’t suggest that the MCU is totally doomed, as one god - who was secretly introduced inThor: Love and Thunder- already proved powerful enough to beat him: Amatsu-Mikaboshi aka King Chaos.
In the Marvel Comics eventChaos Warby Greg Pak, Fred van Lente, and Khoi Pham, Amatsu-Mikaboshi decides that playing the role of a mere god of Earth is no longer acceptable, especially considering the nature of his origin. Amatsu-Mikaboshi is actually King Chaos, the manifestation of the void that existed before the formation of the universe, whose existence is the perfect antithesis of Eternity. Before there was light, there was only darkness, and that darkness was King Chaos.

King Chaos begins the systematic slaughter of every god across the cosmos, claiming their power as his own, to snuff out all life in existence and return the universe to his original void. After killing the entire Greek God Pantheon, King Chaos possesses the corpse of Zeus and uses hispower to take down Galactushimself. While Amatsu-Mikaboshi isn’t able to kill Galactus during their first fight, the fact that he could down the Devourer of Worlds with a single blow all but confirms that the Chaos King could put Galactus down permanently.
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King Chaos is Ready to Put Galactus Down if He Becomes a Problem in the MCU
Amatsu-Mikaboshi Made a Cameo Appearance in 2022’sThor: Love and Thunder
Amatsu-Mikaboshi made a blink-and-you’ll-miss-it cameo appearance in the MCU’sThor: Love and Thunderwhen Thor and the gang traveled to Omnipotence City to seek help from the Council of Godheads. Amatsu-Mikaboshi was sitting on that council, and while his King Chaos identity was still shrouded by the facade of the Japanese God of Death, Marvel Comics fans know who was really sitting on that council, and what this ‘god’ is truly capable of.
With Galactus about to make his live-action debut, having a character in the MCU that has proven capable of taking him down is somewhat reassuring, just in case nothing else can do the trick. Of course, if that happened, then the Marvel Cinematic Universe would have the unleashed Chaos King to deal with (which is infinitely worse), but at least Galactus wouldn’t be a problem. However, there is a simpler way to beat Galactus in the MCU if he steps out of line, as there’s another god who has done that before as well.

Amatsu-Mikaboshi isn’t the Only MCU God who has Defeated Galactus: Thor
Thor#6 by Donny Cates and Nic Klein
When considering MCU gods who have defeated Galactus in the comics, fans don’t have to look further than the main roster of the Avengers, as Thor has actually killed Galactus in a single blow before. As King Thor, the God of Thunder drains Galactus of his Power Cosmic, and then hurls Mjolnir through his chest, killing the Devourer of Worlds in an instant. In the MCU, Thor is also technically the rightful King of Asgard through familial succession, and should therefore have access to a comparable level of power, meaning he, too, is a Galactus-killing god in the MCU.
While Thor may become powerful enough to kill Galactus in the MCU if he ever needed to, fans haven’t seen the God of Thunder wield that level of power quite yet, meaning it’s unlikely that the MCU’s version of Thor would be able to pull off the same feat as his Marvel Comics counterpart. However, being a disguised primordial god, Amatsu-Mikaboshi would have no problem downing the Devourer of Worlds, making King Chaos the one god who can definitely beatGalactusin theMCU.
