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For alternate versions of Phastos, see Phastos' Character Hub

"I wouldn't change a single thing about who I am, born or made. But I do not exist for Arishem. I exist for my family!"

Phastos is the inventor of the community of genetically-engineered Eternals. Created by the Celestials in the World Forge, Phastos was sent to Earth in 5000 BC to progress the planet's societal development, and protect it from the Deviants. Phastos guided and progressed many technological innovations throughout the course of human history, but fell into a state of dejection after the atomic bomb was dropped on Hiroshima, which resulted in monumental loss of human life. Blaming himself, he grew distant from his fellow Eternals and abandoned helping humankind.

In the contemporary era, Phastos settled and started a family with his husband Ben Stoss, and together raised a son, Jack. When Earth's Eternals reassembled to stave off a new wave of Deviants led by Kro, Phastos came to the realization of his true purpose; to pave the way for Earth's Emergence, which would lead to the birth of Tiamut and result in the planet's destruction. The Eternals became divided, with Phastos siding to protect the planet and avert the Emergence from happening. By choosing to save the planet and humanity rather than allow the Emergence to happen, Phastos was abducted by Arishem the Judge alongside Sersi and Kingo so Earth could face judgment.


This section requires expansion


Phastos was built and programmed by Arishem the Judge, and presumably was sent to multiple planets to protect and help evolve sentient life forms from the Deviants, powering a Celestial seed inside the planet, which would absorb the energy made from the sentient lifeforms. Eventually, the Emergence would occur, destroying the planet in the process. Upon finishing their mission, the Eternals would be sent back to the World Forge to have their memories erased and reset.[1]

Protecting Humans

Arriving on Earth

"We're Eternals. We came here from Olympia seven thousand years ago, to protect humans from the Deviants."

The Eternals arrive on Earth in 5000 BC

Phastos alongside the rest of the Eternals were sent to Earth on the Domo. Once awoken, the Eternals were provided with suits to wear before arriving at the planet. Not being one of the Eternal's main fighters, Phastos waited as the others fought the Deviants. When the Deviants attacking the humans were defeated, Phastos came down, and the Eternals presented themselves to the race they were assigned to protect.[1]

Helping in Human Development

"Phastos, this steam..."
"Engine. It's a..."
"It's too soon!"
Ajak and Phastos[src]

In Babylon, Phastos worked day and night inside the Domo, creating tools and technologies to help humanity develop. In a certain occasion, Phastos showed to Ajak his new creation: a steam engine, but Ajak thought that it was too complex, and it would be too soon to present humanity with such technology. When Ajak asked for something more simple, Phastos then presented a plow, that the team found most suitable for the humanity in that period of time.[1]

Defeating the Deviants

"Their weapons have become too deadly. Maybe wasn't such a good idea helping them advance, Phastos?"
"Techlonogy is a part of their evolutionary process, Druig. It's not exactly something that I can stop."
"No, you can't but I can!"
Druig and Phastos argument.[src]

Phastos and Sersi in Tenochtitlan

While a war was taking place in Tenochtitlan, Phastos, Ajak, Sersi, Sprite, and Druig met with the rest of the Eternals after they had fought the remaining Deviants, when men with heavy weaponry began to massacre the natives of the region. Druig then confronted Phastos about how he helped them develop those weapons, when suddenly Thena's Mahd Wy'ry caused her to fight the others unknowingly, injuring Phastos in the process.

While they took Thena to lay on a pedestal and Ajak healed Phastos and the others wounds, an argument between Druig and Ajak began, resulting in Druig deserting the Eternals, and Ajak splitting up the team, telling them to go live their lifes as they wanted.[1]

Giving Up on Humanity

"They're not worth saving."
―Phastos to Ajak[src]

Phastos is conforted by Ajak in Hiroshima.

In August 1945, when United States Air Force dropped an atomic bomb on Hiroshima, Phastos visited the place in the aftermath of the bombing and blamed himself for the incident. He cried as he watched the mushroom cloud above the city and was comforted by fellow Eternal Ajak. Horrified by the Hiroshima bombing, Phastos gave up on humanity and swore to never aid or protect them henceforth.[1]

Starting a Family

Many decades later, Phastos met Ben Stoss, with them started dating and eventually getting married. They had a son, named Jack Stoss, and all three of them lived in a heavily protected house in Chicago. Through his new family, Phastos had eventually gained faith in humanity once more, knowing that despite all of the bad in the world there is also a lot of good.[1]


Reuniting with the Eternals

Phastos meets Ikaris and Sersi

After the death of Ajak, and the revelation of their own purpose in Earth, the Eternals went after Phastos to ask for help. When he saw Ikaris and Sersi, and they told him everything, Phastos was hesitant to help them, but his partner was able to convince him, reminding him about their son, and how they should give him a chance to grow up now.

Phastos starts the Domo in Iraq

Returning to the Domo

Phastos then said goodbye to his family, and went to Iraq with his fellow Eternals. There he was able to find and activate the Domo. Once inside his lab, Phastos began to work in something that could connect all the team and allow Druig to penetrate in a Celestial mind, called Uni-Mind.[1]

Ikaris' Betrayal

"You are so pathetic!"
―Phastos to Ikaris[src]

Phastos working in the devices to connect the Eternals.

When Phastos was almost able to build the devices that could create the Uni-Mind, Ikaris used his eye beams to destroy the devices, revealing he was responsible for Ajak's death, that he knew all along about the Emergence and was willing to kill all of them to ensure it to happen happen. Phastos expressed his disgust for Ikaris decision, shouting that he doesn't live for Arishem, but he lives for his family.

The team split in two, and Phastos sided in the team that would try to stop the Emergence. He asked Sersi for her Celestial Communication Sphere, so he could build the devices that would connect them in the Uni-Mind, being able to finish it in time. They all suited up and took the devices.[1]

Stopping Tiamut

Phastos using his powers to attack Ikaris

"I've been wanting to clip your wings for a long time, Ikaris!"
―Phastos to Ikaris[src]

While Sersi, Druig, and Makkari went to the groud to stop the Emergence, Thena and Phastos stayed in the ship to distract Ikaris. That didn't work out, as when the connection to create the Uni-Mind began, Ikaris attacked Druig and destroyed the Domo, but Makkari rescued Thena and Phastos.

While Makkari engaged in a battle against Ikaris, Phastos and the others defended themselves from a erupted volcano caused by the Emergence. But when Sersi went closer to Tiamut so she could stop his awakening, Phastos and Thena confronted Ikaris to keep him busy. Phastos used his powers to create devices to attack and contain Ikaris, being able to control his powers for some time.

When Sersi was finally able to reach Tiamut, all of the Eternals, including Ikaris and Sprite, were able to connect through the Uni-Mind, by the will of Tiamut himself, and stop the Emergence.

After the battle, Phastos rebuild the Domo, and reunited with his family, Thena, Druig and Makkari in Ajak's Homestead while watching the news on TV. The later three boarded the Domo, to travel around the Universe finding other Eternals and telling them the truth, while Phastos watched with his son the ship depart.[1]

Judged by Arishem

Phastos is held captive by Arishem the Judge

Some time later, Phastos was held captive by the Prime Celestial, Arishem, for sabotaging the emergence of Tiamut the Communicator. He was bought there with Sersi and Kingo, so Arishem would evaluate their memories for a final judgment of the humans.[1]


"I have a family now. They give me faith again. And I see the good in humanity in them every single day."

Phastos has helped nudge humanity forward technologically while always keeping his brilliance hidden in the shadows. Phastos has use technopathy power to protect humans and help them evolve their technologies at their own pace. In recent years, he started a family with a partner and son. At first, Phastos seemed eager to use his superhuman intellect and technopathy to aid humankind in their technological development, as when he originally invented the engine for the people of Babylon to use and seemed disappointed that due to the slow rate of humanity's development, he could only give them a, then rudimentary, plow. However, after the atomic bombings of Hiroshima and Nagasaki in the end of World War II, Phastos became cynical and guilt-ridden for his role in advancing mankind's capacity for destruction via the technology he helped advance. This trauma resulted in Phastos turning his back on his humanity and abstain from using his powers to invent.

Despite his cynicism, Phastos possesses a tremendous love for his family, as to him, they are his only lens into seeing the best of humanity. In fact, Phastos only took part in stopping the Emergence, not to save humanity, but to save his partner and son from the Celestials destruction of Earth. Phastos' love for his family is so great, that despite his vow not to use his powers, Phastos only used them for the sake of protecting his family, as he created an indestructible house for them to live in.

Powers and Abilities


This section requires expansion
  • Eternal Physiology: By design from the Celestials, Phastos is an Eternal possessing superhuman strength, durability, speed, agility, stamina, reflexes, and healing, numerous times superior than any normal human being, as well as immortality and being able to manipulate cosmic energy to a certain degree.
    • Superhuman Strength: Like all Eternals, Phastos possesses great superhuman strength, numerous times stronger than any normal human being. As Ikaris attempted to fly away, Phastos was able to use a weapon he created, which resembled a whip, to prevent him from escaping, managing to drag Ikaris to the floor with his strength, causing the ground beneath him to crack.
    • Superhuman Durability: Phastos' body is numerous times more resistant to physical and energy damage than any normal human being. Phastos was able to survive being shot directly by Ikaris' optic beams during the latter's initial confrontation with the Eternals aboard the Domo. While Ikaris was destroying the Domo, he was inside it. However, Phastos was unharmed and had no visible injuries after he was rescued by Makkari from the Domo.
    • Superhuman Speed: Phastos can run and move at great superhuman speed, much faster than any normal human being.
    • Superhuman Agility: Phastos naturally possesses far greater agility, equilibrium, flexibility, dexterity, balance, and body coordination than any normal human being.
    • Superhuman Stamina: Phastos' advanced musculature is considerably more efficient than any normal human being. As a result, his muscles virtually do not produce fatigue toxins during physical activity. His endurance allows him to exercise his maximum capacity for an extremely long period of time without tiring at all.
    • Superhuman Reflexes: Phastos can react and dodge objects traveling at high speeds, much quicker than any normal human being.
    • Regenerative Healing Factor: Phastos' metabolism enables him to rapidly regenerate damaged bodily tissue with far greater speed and efficiency than any normal human being.
    • Immortality: As an Eternal, Phastos is genetically able to live forever, without dying due to old age or illnesses.
    • Cosmic Energy Manipulation: By design of the Celestials, all Eternals are genetically capable of using cosmic energy. Each Eternal possesses a unique ability, all derived from the same cosmic power source. Phastos uses his cosmic energy to grant himself technopathy.
      • Constructs Creation:

        Phastos attacking Ikaris

        Phastos is able to manipulate cosmic energy to design and create any invention or weapon.
        • Holographic Projection: To be added
        • Energy Blast: To be added
        • Force-Field Generation: To be added
        • Chain Creation: To be added

Former Powers

  • Uni-Mind Energy Manipulation: The Eternals can harness their cosmic powers together to create the Uni-Mind, which amplifies their powers.
    • Levitation: During the Uni-Mind, Phastos was able to float a few feet above the ground.


  • Genius-Level Intellect: Blessed with the power of invention by the Celestials, Phastos is not only the most intelligent member of the Eternals' team of thinkers, but also the smartest member of the community of genetically-engineered Eternals. Therefore, he serves as the inventor of the group.
  • Master Engineer:

    Phastos creating an invention

    The technology-minded Eternal, Phastos, is the inventor of the group. During the fight against the Deviants, Phastos served as the Eternals' chief inventor and over the centuries, Phastos has helped nudge humanity forward technologically while always keeping his brilliance hidden in the shadows. He is the one who originally conceived the plow and the steam engine, although he was warned that the latter could not be implemented so early.
  • Master Scientist: To be added
  • Expert Combatant: Although he was not involved as frequently as other Eternals in the fights against the Deviants, Phastos was a perfectly capable fighter on his own, especially when armed with his powerful rings which allowed him to hold his own against Ikaris.
  • Multilingualism: Phastos is fluent in English and sign language, using the latter to communicate with the deaf-mute Makkari, and can understand Arabic, a language used by his husband Ben Stoss.



To be added

Other Equipment

  • Celestial Armor: Phastos donned a purple and silver armor, equipped on him by the Domo. The armor was durable enough to withstand multiple blows during the fight with the Deviants.


  • Domo: To be added
  • Private Jet: To be added


To be added






  • In the comics, Phastos was an Eternal often associated with the Greek god of forgery Hephaestus and the master technologist of the Eternals of Earth.

Behind the Scenes


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The Marvel Cinematic Universe Wiki has a collection of images and media related to Phastos.
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The Marvel Cinematic Universe Wiki has a collection of quotes related to Phastos.
  1. 1.00 1.01 1.02 1.03 1.04 1.05 1.06 1.07 1.08 1.09 1.10 1.11 Eternals
  2. Translates from Arabic to: My Dear
  3. 3.0 3.1 Eternals: The 500 Year War

External Links