Prelude

Discovering the Multiverse

In the 31st century, Kang discovered the existence of the Multiverse and parallel dimensions on top of his own. At the same time, Kang's alternate selves from different universes started discovering the Multiverse as well. These alternate selves made contact with each other and started exchanging technology and knowledge in order to improve the other universes along with their own.^[1]

Kang's Rebellion

Also at the same time, a handful of the variants decided to form the Council of Kangs as a presiding body. However, one of the members, Kang the Conqueror believed that their collective temporal meddling will result in the end of the Multiverse as it would eventually lead to incursions and the collapse of all alternate timelines. Kang ultimately came to a conclusion that the only way to bring the order to the Multiverse and prevent its demise was to conquer some realities while destroying others.^[2]

All-Out War

As for this, Kang sparked the war among all of his alternate selves throughout the Multiverse, which resulted in more and more of Kangs also waging war on each other, seeking to annihilate other realities to save their own from a ruthless conquest.^[1] The sparked war led to countless incursions which threatened the stability of the Multiverse as a whole. Kang the Conqueror in particular brought destruction to countless universes, all in an attempt to prevent the ultimate demise of the whole Multiverse.^[2]

He Who Remains' Plan

In the middle of the war, the ripples in space-time caused by the Kang variants resulted in the creation of a trans-temporal entity, which became known as Alioth. He Who Remains, a Kang variant discovered the entity and experimented on him, studying his abilities to consume space and time itself. He eventually decided to weaponize Alioth and used his tremendous power to defeat his alternate selves and put an end to the Multiversal War,^[1] with the help of a woman called Ravonna Renslayer.^[3]

Aftermath

TVA

To prevent another Multiversal War, He Who Remains chose a number of realities and isolated them from the greater Multiverse, ending what he called the "Sacred Timeline".^[4][1] He also formed a multiversal taskforce called "Time Variance Authority" to manage the Sacred Timeline and prevent any further branches from happening, thereby stopping new unscripted realities from coming into existence, branches that could connect to the other realities of the Multiverse if allowed to exist.^[4] Also, he eventually hid every trace of his existence and wiped the memories of his subordinates, which caused every TVA personnel to believe that the bureaucracy was founded upon the idea that, during the Multiversal War, some mysterious beings called the Time-Keepers stood up and stopped the war by restructuring the Multiverse into one single timeline.^[5][3][4]

The decision to prevent divergences in the timelines meant individuals could not have free will and were supposed to follow a very strict guide written and controlled by He Who Remains. The TVA itself was in charge of pruning these new realities that could be created either by Multiversal time travel or unscripted decisions made by individuals inside of this Sacred Timeline.^[1][4] The actual and more specific details of the TVA's creation were kept secret to the TVA members themselves, who believed they were created by the Time-Keepers when, in fact, they were Variants stripped from timelines that were pruned.^[6] For a long time, He Who Remains brought harmony to the Multiverse as no other Variants of himself, who could be much worse, had a way to interact with the Sacred Timeline. However, He Who Remains was killed by a Loki variant called Sylvie Laufeydottir which resulted in the Sacred Timeline being reconnected to the greater Multiverse, which allowed his other Variants to access the Sacred Timeline.^[1]

Following Loki's sacrifice to destroy the Temporal Loom, the TVA shifted its focus to monitoring the Multiverse and tracking down variants of He Who Remains.^[7][8]

Banishment of Kang

After the multiversal war, the Council of Kangs were forced to convend with Kang the Conqueror, who was still seeking to start a new war.^[2] With the connection of the Sacred Timeline re-established following the destruction of the Temporal Loom,^[7] the Council ultimately decided to banish Kang to the Quantum Realm to stop him. Arriving around the late 1980s in the Quantum Realm, Kang came into contact with Janet Van Dyne and joined forces with her to re-ignite the Multiversal Engine Core of his Time Sphere so that both of them could escape the Quantum Realm. However, when van Dyne found out about the Multiversal War and the destruction Kang intended to cause, she destroyed the core, trapping both Kang and herself for several more decades.^[2]

Seeking a New Conflict

Following the death of Kang the Conqueror, Centurion met with Immortus and Rama-Tut and told the two about Kang's demise at the hands of Ant-Man and Wasp. Realizing that more people were beginning to learn more about the Multiverse and that could potentially lead to the destruction of their dynasty, Immortus called upon the Council of Kangs to discuss the impending threat. As the trio observed the branching timelines, more and more Variants entered the stadium.^[2]

• The Multiversal War was presumably occured on several realities in the Multiverse, according to what He Who Remains and Kang the Conqueror said.^[1][2]