Marvel’s Parallel Universes: An Overview of the Multiverse’s Realities

Since Loki in 2021, the word “multiverse” has established itself as one of the pillars of the MCU. But contrary to popular belief, the Marvel multiverse is not a vague notion: the comics, followed by the films and series, have gradually mapped out dozens of parallel realities, each identified by a numbered “Earth,” with its own hero variants, its own rules, and sometimes its own catastrophes.

Rather than revisiting the TVA’s already well-known mechanisms or the biography of Kang the Conqueror, this article offers a comprehensive overview of the multiverse’s realities as they have been shown on screen: which Earths exist, what sets them apart, and how they could all come under threat in upcoming films.

The multiverse, a recent concept that is already essential to the MCU

For a long time, the MCU operated on a single, linear timeline, from Iron Man in 2008 to Avengers: Endgame in 2019. It was the Loki series that officially opened the door to the multiverse, revealing the existence of a Time Variance Authority tasked with preserving a single “sacred” timeline. Since then, nearly every new release has expanded the multiverse map: Spider-Man: No Way Home, Doctor Strange in the Multiverse of Madness, season 2 of Loki, and the animated series What If...?, which explores what would happen if key MCU events had unfolded differently.

The Sacred Timeline: the only chronology... until Loki

Before the multiverse was revealed, the TVA ensured that only one timeline existed, eliminating any “variant” that strayed from it to prevent uncontrolled branches. This organization, how it operates, and its role in the emergence of the multiverse are detailed in our article on the TVA and the Sacred Timeline. It was the defeat of He Who Remains at the end of the first season of Loki that brought this singular control to an end and officially set multiple parallel realities free to exist.

The Main Alternate Earths Identified in the MCU

The Marvel multiverse designates each reality with an Earth number. Here are the main ones identified on screen to date.

The Multiverse in the Comics: Where Did the Idea Come From?

The multiverse was not invented by the MCU: it is a concept that has existed in Marvel comics for several decades. The idea of an “Earth-616” as the reference reality, surrounded by countless numbered parallel Earths, dates back to the 1960s and developed through landmark sagas such as Secret Wars in 1984 and its modernized version in 2015, in which dozens of realities literally collided with one another. Film adaptations avoided this territory for a long time, considering it too complex for the general public, before the success of series such as Loki proved that viewers were ready to follow a more ambitious mythology. This shift now allows the MCU to draw on decades of alternate stories published in the comics while adapting them to its own continuity.

This editorial choice also has a very practical benefit for the studio: it allows characters or teams that historically belonged to other franchises, such as the Fantastic Four or the X-Men, to be introduced by name without having to explain their absence from the MCU’s first ten phases. By having them come from an alternate Earth, their arrival becomes a story event rather than an inconsistency to be resolved.

What If...? : The Official Laboratory for Variants

Airing on Disney+, the animated series What If...? is probably where the Marvel multiverse is explored with the greatest creative freedom. Each episode starts with a simple question, such as “What if Peggy Carter had received the super-soldier serum?” or “What if T’Challa had become Star-Lord?”, to build a complete alternate reality. The Watcher, a cosmic character who observes these divergences without intervening, serves as the series’ common thread and embodies the idea that the multiverse is infinite.

Loki Tapestry - Nexus Portrait

The god of mischief surrounded by symbols associated with the Nexus, the beating heart of the multiverse.
A wall decoration directly inspired by the Loki series.

From €26.90

View the product

Iconic Variants: When the Same Hero Exists Multiple Times

The multiverse is not limited to entire realities: it also produces "variants," alternate versions of the same character who have lived different lives. Sylvie, a female variant of Loki raised on the run since childhood, is the most striking example; her journey is detailed in our article on Sylvie, Loki's Variant. Other notable variants include President Loki, Boastful Loki, and Classic Loki, all encountered in the Void, as well as the Illuminati version of Doctor Strange in Multiverse of Madness, killed by the Wanda Maximoff of the main reality.

The Role of Kang and Incursions Between Realities

While the multiverse remains largely stable in Loki and Doctor Strange, it is the threat of Kang the Conqueror that introduces a danger of a different kind: incursions, cataclysmic collisions between two realities that come into contact, threatening to destroy both at once. Our article on Kang the Conqueror explores this mechanism and the central role played by his variants in the multiverse's fragile balance. It was precisely to prevent these incursions from multiplying that the TVA originally existed, making the fall of He Who Remains all the more consequential.

Funko Pop Avengers Scarlet Witch - Multiverse of Madness Keychain

Wanda Maximoff in her film costume, ready to accompany you wherever you go on your keyring.
A perfect nod to the multiverse events of Doctor Strange 2.

€28.90

View the product

Heading Toward Avengers: Doomsday and Secret Wars: The Fusion of Realities Under Threat

The next announced MCU films could well push the concept of the multiverse to its ultimate extreme. Our article on Secret Wars explains how multiple realities could literally collide, in a storyline directly inspired by the iconic 2015 Secret Wars comic, where numerous alternate Earths merge into a single "Battleworld." Before that, our article on Multiverse Madness looks back at the first cracks that appeared between realities since Doctor Strange in the Multiverse of Madness.

What We Know So Far

• Several variants of Kang, including the Conqueror, plot across realities.
• Doctor Doom appears as a central threat in the MCU's next phase.
• The Fantastic Four, from an alternate Earth, officially join the Avengers.
• The incursion concept foreshadows collisions between multiple realities on screen.

Avengers Portals Poster - Wall Frame

The imagery of dimensional portals, a motif that has become iconic in the great battles of the multiverse.
A poster that perfectly captures the spirit of parallel realities.

From €22.90

View the product

How to Spot a Variant in a Film or Series

For fans discovering the multiverse, a few pointers can help them find their way on screen. First, a variant shares the original's appearance and part of their personality, but has a different life path: a clothing detail, hairstyle, or slightly altered tone of voice often serves as a visual clue, such as Sylvie's distinctive golden horns compared with Loki's classic helmet. Next, the TVA identifies each variant with a letter followed by numbers, written on files or badges—a convention used in several scenes throughout the series. Finally, the setting itself often gives away the alternate reality: different technology, inverted architecture, or changed dominant colors, such as the Nexus, which visually materializes points of temporal divergence.

One final, subtler clue concerns iconic objects: in certain alternate realities, Thor's Mjolnir or Captain America's shield changes shape, color, or wielder—a strong signal for attentive viewers who immediately recognize that they are no longer in the main timeline. These details, scattered throughout by the writers, turn each viewing into a real treasure hunt for the most dedicated fans, who enjoy comparing alternative versions of their favorite heroes from one episode to the next.

Frequently asked questions

What exactly is the Marvel multiverse?

It is the collection of alternate realities coexisting outside the MCU's main timeline, each identified by an Earth number and potentially containing variants of the same characters.

What is the difference between a variant and an alternate reality?

An alternate reality is an entire universe with its own history, whereas a variant is a different version of the same individual who experienced different events within a reality or a temporal void.

Since when has the multiverse existed in the MCU?

The concept is officially introduced with the 2021 series Loki, although foreshadowing elements, such as Doctor Strange's visions, appeared as early as Avengers: Infinity War.

How many realities exist in the Marvel multiverse?

Officially infinite in number, according to the Watcher in What If...?, although only a handful of realities have been explored in detail on screen so far.

Will the multiverse continue to be a central theme of the MCU?

Everything points to yes: Avengers: Doomsday and the upcoming Secret Wars are shaping up to be the films that will push the concept to its extreme, potentially involving a partial merging of several realities.

To delve deeper into the Avengers universe

• The Marvel Multiverse Explained Simply
• Multiverse Madness: Understanding the Chaos of the Marvel Multiverse
• The TVA and the Sacred Timeline Explained
• Kang the Conqueror: The Multiverse Villain Explained
• The MCU Guide in Chronological Order (dedicated page)

Key takeaways

The Marvel multiverse today forms a true mosaic of realities, variants, and threats on a cosmic scale—far from being merely a plot device. To showcase your passion at home, head to our Avengers Tapestries, our Avengers Posters, and our selection of Doctor Strange Products, not to mention our Avengers Figurines, our Avengers Stickers, and our Avengers Keychains for personalizing your belongings with the colors of the multiverse.