Eternals

• Core Identity: The Eternals are an ancient race of super-powered, near-immortal humanoids created by the cosmic beings known as the Celestials to defend and cultivate intelligent life on Earth.
• Key Takeaways:
• Role in the Universe: In both comics and the MCU, the Eternals are the designated protectors of Earth, tasked by the god-like Celestials with defending humanity from their monstrous counterparts, the Deviants. They operate largely in secret, their existence shaping myths and legends throughout human history.
• Primary Impact: The Eternals represent a key pillar of Marvel's cosmic lore, introducing the concept of celestial engineering and the ancient, hidden history of humanity's evolution. Their conflict with the Deviants is a fundamental struggle between order and chaos, and their relationship with their creators explores themes of free will versus predestination.
• Key Incarnations: The most critical difference lies in their origin: in the Earth-616 comics, they are an evolutionary offshoot of humanity created by Celestial genetic tampering. In the Marvel Cinematic Universe, they are wholly synthetic beings, advanced androids built by the Celestials for a very specific, and ultimately terrifying, purpose.

The Eternals first appeared in The Eternals #1, published by Marvel Comics in July 1976. They were created by the legendary writer and artist Jack “The King” Kirby upon his return to Marvel after a stint at DC Comics, where he had been developing his “Fourth World” saga. The Eternals bear many thematic and conceptual similarities to DC's New Gods, reflecting Kirby's fascination with epic mythologies, ancient astronauts, and the cosmic scale of gods and men. Kirby's initial series was heavily influenced by Erich von Däniken's popular 1968 book, Chariots of the Gods?, which posited that ancient human civilizations were visited and influenced by extraterrestrial beings. The Eternals were Kirby's comic book realization of this concept: powerful, god-like aliens who were the basis for humanity's myths and legends. Initially, the series was intended to exist in its own separate continuity. However, after its cancellation, writers Roy Thomas and Mark Gruenwald later integrated the Eternals, Deviants, and Celestials into the mainstream Marvel Universe in the pages of Thor, establishing them as a crucial part of Earth's secret history. This integration has been solidified over decades, most notably in Neil Gaiman's 2006 miniseries and Kieron Gillen's paradigm-shifting 2021 run.

The origin of the Eternals is one of the most significant points of divergence between the primary comic universe and the cinematic adaptation. Understanding both is key to grasping their place in their respective canons.

Approximately one million years ago, the First Host of the omnipotent Celestials arrived on Earth. These “space gods” discovered a nascent humanity and saw potential. They selected a tribe of early hominids (Homo erectus) and began a series of profound genetic experiments. This Celestial tampering resulted in the creation of three distinct evolutionary offshoots from the baseline human stock:

• The Eternals (Homo immortalis): Beings of near-perfect form, possessing immense power derived from their ability to process and manipulate cosmic energy. They were granted near-immortality, incredible resilience, and a powerful psionic link with one another. They were designed as the protectors, the shepherds of Earth.
• The Deviants (Homo descendus): Genetically unstable and physically monstrous, the Deviants were a chaotic byproduct of the experiments. Their DNA is highly mutable, resulting in a vast array of forms, often with unique powers. They are driven by change and conquest, placing them in eternal opposition to the stable and unchanging Eternals.
• Baseline Humanity (Homo sapiens): The Celestials also embedded a latent potential for superhuman evolution within the genetic code of the remaining hominids. This “X-Gene” would eventually lead to the emergence of mutants millennia later, making humanity itself a crucial part of the Celestials' grand experiment.

The early Eternals established a magnificent civilization in the city of Titanos in northern Asia. However, a philosophical schism led to a devastating civil war. One faction, led by the peaceful Kronos, wished to live in contemplation, while the other, led by his warlike brother Uranos, believed the Eternals should conquer the world. Kronos's faction was victorious, and Uranos and his followers were exiled into space. A later experiment by Kronos to tap into the cosmic energies of the universe went horribly wrong, resulting in an explosion that destroyed Titanos and atomized his body, but elevated his consciousness to a cosmic entity. The blast also activated latent cosmic energy within the surviving Eternals, granting them their full powerset and true immortality. Kronos's sons, Zuras and A'lars, then led their people. Zuras led one group to found the city of Olympia in the mountains of Greece, while A'lars, unwilling to rule alongside his brother, journeyed into space, eventually reaching Saturn's moon Titan. There, he took a surviving Uranian Eternal as his wife and founded a new civilization of Titanian Eternals. A'lars, later known as Mentor, would father two sons: Eros (Starfox) and the infamous Mad Titan, Thanos. Thanos himself was born with “Deviant Syndrome,” a genetic throwback that gave him a Deviant-like appearance and a nihilistic obsession with death. The Earth-based Eternals of Olympia, guided by Zuras, became the basis for the Greek and Roman pantheons of gods in human mythology, while other splinter groups influenced other world cultures. They have largely remained hidden from humanity, defending it from the shadows against Deviant threats and awaiting the periodic return of their Celestial creators for judgment. The 2021 series by Kieron Gillen revealed a dark secret to their immortality: their resurrection via “The Machine” (Earth itself) comes at the cost of a random human life, a fact that has shattered their society and self-perception.

The MCU drastically re-imagined the Eternals' origin for its 2021 film, Eternals. In this continuity, the Eternals are not an offshoot of humanity. They are entirely artificial beings—highly advanced, immortal androids created by the Prime Celestial, Arishem the Judge, in the World Forge, a cosmic foundry. Arishem's grand design involves the “Emergence.” He seeds promising worlds with the life-giving energy of a Celestial “egg” at the planet's core. For this new Celestial to grow and emerge, it requires a massive amount of sentient energy, which can only be generated by a large, intelligent population. However, the apex predators known as Deviants would often evolve on these worlds and consume the intelligent life, preventing the Emergence. To solve this problem, Arishem created the Eternals. These synthetic beings are programmed with a single mission: travel to a seeded planet, eliminate all Deviants, and allow the sentient population to flourish and grow, all while being forbidden from interfering in any of their internal conflicts (wars, famines, etc.). Once the population reaches the required threshold, the Emergence occurs, a new Celestial is born, and the planet is destroyed in the process. The Eternals, their memories of the previous cycle wiped clean, are then sent to a new world to begin the process anew. The team of Eternals sent to Earth arrived in Mesopotamia in 5,000 BC. They believed their home world was Olympia and that they were serving a noble cause of galactic cultivation. For 7,000 years, they protected humanity from the Deviants. They became figures of myth and legend, just as in the comics. However, after believing they had killed the last Deviant in the 1500s, the team disbanded and integrated into human society, waiting for Arishem to call them home. The central conflict of the film is their discovery of the true nature of their mission: that their entire existence is a lie, and their purpose is to nurture humanity for its eventual sacrifice. This revelation forces them to choose between their duty to their creator and their newfound love for the planet and people they were sworn to protect, leading to a schism that pits Eternal against Eternal.

The abilities and societal structure of the Eternals reflect their different origins in the comics and the MCU, with the former emphasizing shared potential and the latter focusing on specialized roles.

All Eternals possess the ability to psionically channel and manipulate cosmic energy, granting them a shared set of fundamental powers, though most choose to specialize in a few specific disciplines.

• Superhuman Physiology: Their bodies are vastly superior to humans, granting them superhuman strength (capable of lifting dozens of tons), speed, stamina, and durability. They are nearly invulnerable to conventional injury.
• Near-Immortality: Eternals do not age after reaching maturity and are immune to all terrestrial diseases and toxins. While they can be killed if their atoms are dispersed over a wide area, they can be resurrected through The Great Machine.
• Cosmic Energy Manipulation: This is their core ability, from which all others stem. It can be projected as powerful concussive blasts, intense heat (disintegration beams), or light.
• Psionic Powers: All Eternals possess a degree of psionic ability, including low-level telepathy and the ability to create powerful illusions. Some, like Sersi and Sprite, are exceptionally gifted in this area. Sersi can transmute matter on a molecular level, while Sprite can cast illusions so powerful they are indistinguishable from reality.
• Flight: By psionically levitating themselves, all Eternals can fly at superhuman speeds.
• Teleportation: Some powerful Eternals, like Ikaris, can teleport themselves and others over vast distances.

Eternal society is hierarchical and steeped in ancient tradition.

• The Prime Eternal: The ruler of the Earth's Eternals, a title passed down through sacred rituals. The Prime Eternal is the only one who can initiate the formation of the Uni-Mind. Past Prime Eternals include Zuras, Thena, Ikaris, and currently Druig.
• The Uni-Mind: The ultimate expression of the Eternals' collective power. By joining in a psionic ritual, the Eternals can merge their physical forms and consciousness into a single, immensely powerful psionic entity made of pure energy and light. The Uni-Mind possesses the combined knowledge and power of all its constituent members and is used to make crucial decisions or confront cosmic-level threats.
• The Great Machine: Revealed in Kieron Gillen's run, “The Machine” is the name the Eternals give to the planet Earth itself, which functions as their engine of resurrection. Upon death, an Eternal's consciousness is stored and then “re-activated” in the Exclusion, where a new body is created for them in the heart of the Earth. This process, however, costs one human life, a fact hidden from most Eternals for millennia by their leaders.
• Cities: Their primary Earthly city is Olympia, hidden in the Greek mountains. They also maintain outposts like Polaria in Siberia.

In the MCU, the Eternals' powers are portrayed as more distinct and specialized, with each member designed by Arishem to fulfill a specific role within their ten-member unit. While all possess superhuman strength, durability, and immortality (as they do not age and can heal from most wounds), their primary cosmic power is unique.

• Ikaris: The tactical leader. Can fly and projects powerful cosmic energy beams from his eyes.
• Sersi: The empath. Can transmute non-sentient matter into other forms (e.g., stone into water, a bus into rose petals).
• Ajak: The Prime Eternal and spiritual leader. The only one able to communicate directly with Arishem. Possesses advanced healing abilities for herself and others.
• Thena: The elite warrior. Can manifest weapons of pure cosmic energy. Suffers from Mahd Wy'ry, a condition caused by the strain of millennia of erased memories, causing her to lash out violently.
• Kingo: The showman. Can project bolts of cosmic energy from his hands.
• Sprite: The illusionist. Can project photorealistic illusions on a massive scale. Trapped in the body of a child.
• Phastos: The inventor. Can conceptualize and manifest any technology he can imagine, aiding in humanity's technological development.
• Makkari: The scout. Possesses superhuman speed, making her the fastest woman in the universe.
• Druig: The manipulator. Can control the minds of sentient beings.
• Gilgamesh: The protector. The strongest of the Eternals, able to create a powerful cosmic energy exoskeleton around his arms and fists.

The MCU's Uni-Mind is also re-imagined. It is not a physical being but a powerful energy circuit created when the Eternals link their powers. Druig initiates it to amplify his own mental powers, and Sersi later uses it to channel the combined energy of the group (and the dormant Celestial Tiamut) to transform the emerging Celestial into marble, saving the Earth. Their technology is primarily seen in their starship, the Domo, and the advanced devices created by Phastos.

• Humanity: The Eternals' core mission, in both universes, is the protection of humankind. In the comics, this is a self-appointed role stemming from their status as Earth's designated defenders. In the MCU, it is their programmed directive. Over millennia, many Eternals, particularly Sersi, have developed a deep love for humanity, its culture, and its potential, often at the cost of their own detachment.
• The Celestials: A complex and fraught relationship. The Eternals view the Celestials as their creators and gods, beings worthy of reverence and fear. For most of their history, they have served the Celestials' unknowable plans without question. However, recent revelations in both the comics (the cost of resurrection) and the MCU (the true purpose of the Emergence) have pushed the Eternals into open rebellion, forcing them to define their existence outside the shadow of their creators.
• The Avengers: In the comics, the Eternals have had sporadic but significant interactions with Earth's Mightiest Heroes. Sersi served as a prominent member of the Avengers for a time in the 1990s. Their relationship is often one of cautious alliance, as the Eternals' cosmic scope and secretive nature can put them at odds with the more grounded Avengers. Their shared battle against the “Dark Celestials” during the Final Host event was a key moment of cooperation.

• The Deviants: The primary and eternal antagonists. The Deviants are the chaotic, misshapen counterparts to the perfect, orderly Eternals. Their conflict is a fundamental ideological and physical war that has spanned a million years. In the comics, the Deviants have a complex society in the sunken city of Lemuria, ruled by a priesthood and monarchy. In the MCU, they are initially depicted as monstrous predators, but later revealed to have evolved, with their leader, Kro, gaining sentience and the ability to absorb the powers of the Eternals he kills, seeking revenge for their eons of slaughter.
• Thanos: The Mad Titan is the most infamous member of the Eternal race, though he is an offshoot from the Titanian colony. Born with Deviant Syndrome, which gave him his purple, craggy hide, Thanos embodies a perversion of the Eternal drive for order, twisting it into a nihilistic quest to impose the “balance” of death upon the universe. While his primary foes are the Avengers and the cosmic heroes of the galaxy, his heritage as an Eternal is a core part of his identity and a source of shame for his people.
• Uranos the Undying: An ancient and powerful Eternal from the pre-civil war era in the comics. A genocidal warmonger who believed Eternals should rule all lesser life, he was exiled by his brother Kronos. His recent re-emergence has positioned him as a major threat not just to the Eternals, but to the entire Marvel Universe, as he represents the darkest, most tyrannical potential of his race.

The Eternals' primary affiliation is to their own race and their sworn duty to the Celestials. They are a self-contained society that rarely interacts with the outside world. However, individual members have broken from this isolation. Sersi's tenure with the Avengers is the most notable example. Starfox (Eros of Titan), another Titanian Eternal and brother of Thanos, also served as an Avenger. For the most part, however, they see themselves as above the day-to-day squabbles of humanity and its heroes, intervening only when a threat is of a planetary or cosmic scale.

This is the foundational text. Kirby's original 12-issue series introduced the core concepts: the god-like Celestials arriving on Earth for their “Fourth Host” to pass judgment, the hidden war between the heroic Eternals and the monstrous Deviants, and the human archaeologists who stumble upon this cosmic secret. The series is pure, undiluted Kirby, filled with grand ideas, dynamic artwork, and mythological archetypes. It established characters like Ikaris, the stoic warrior; Ajak, the Speaker to Celestials; Sersi, the free-spirited transmuter; and Thena, the warrior-princess. While it was left unfinished, its ideas were so powerful they became an essential part of Marvel's cosmic architecture.

This landmark miniseries served to reintroduce the Eternals to a modern audience. The story begins with the entire race having been mind-wiped and living mundane human lives, with no memory of their powers or history. A medical student named Mark Curry (secretly Makkari) begins to have strange visions, while Ikaris slowly pieces together the truth: one of their own, the eternally young Sprite, grew tired of never being able to age and used the power of a sleeping Celestial to rewrite reality and make them all mortal. The series is a brilliant mystery that methodically reawakens the Eternals and re-establishes their mythology, making them accessible and compelling for the 21st century. It was highly influential on the MCU film's plot, particularly the idea of the Eternals being “asleep” within humanity.

This recent series represents the most significant evolution of the Eternals' lore since their creation. Gillen introduces a set of guiding principles for Eternal society (“Protect Celestials. Protect the Machine. Correct excess deviation.”) and then systematically deconstructs them. The central, earth-shattering revelation is that their resurrection process via The Machine (Earth) is not without cost: every time an Eternal is reborn, a human life is consumed. This truth reframes their role as humanity's protectors as a horrific, parasitic lie. This revelation sparks a new civil war, with Ikaris and others horrified by the truth, while Druig and his faction see it as an acceptable price. This run also saw the Eternals make contact with their cousins, the mutants of Krakoa, and played a central role in the 2022 crossover event, A.X.E.: Judgment Day.

While the MCU is the most prominent alternate version, the Eternals have appeared in other realities.

• Ultimate Universe (Earth-1610): A version of the Eternals was hinted at in the Ultimate Extinction event, where they were depicted as a race of planetary “antibodies” created by the Gah Lak Tus entity to facilitate its consumption of worlds. This is a much darker and more alien interpretation.
• Heroes Reborn (1996): In the pocket universe created by Franklin Richards, the Eternals and Deviants were merged into a single race. When Thena, the leader of this race, was killed, the race split back into two warring factions.
• The Eternal (2003): A Marvel MAX series by writer Chuck Austen reimagined the concept, focusing on Ikaeden, an alien envoy, and his guardian, Kurass, who were sent to Earth to facilitate humanity's evolution. This was a grittier, more mature take that is not considered part of the mainstream continuity.

• Celestials
• Deviants
• Thanos
• Jack Kirby
• Ikaris
• Sersi
• Earth-616
• Marvel Cinematic Universe

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