Character Template HelpHelp
Real Name
Cain Marko
Current Alias



Dr. Kurt Marko (father, deceased)

Marjorie Marko (mother, deceased)
Sharon Xavier-Marko (step-mother, deceased)

Professor Charles Xavier (step-brother)







Marital Status

Adventurer, professional criminal, mercenary, formerly soldier

Cain gained his powers while on a expedition in Asia when he came across the Crimson Gem of Cyttorak

Place of Birth

First appearance


Quote1 Don't you know who I am? I'm the Juggernaut, b**ch! Quote2
-- Juggernaut

Early Life

Cain Marko is the son of Dr. Kurt Marko, who was an atomic researcher, and Marjorie Marko. Cain's parents separated and he was eventually sent to boarding schools, which he continued to get expelled from. Cain's mother died shortly after when he was only three. Dr. Marko's wealthy colleague, Dr. Brian Xavier, another atomic researcher, died in an accident, and Dr. Marko eventually married his widow, Sharon Xavier, for her great wealth. On marrying Sharon, Dr. Marko moved into her large Westchester County mansion, and, after yet another expulsion from school, eventually moved Cain in also.

Dr. Marko favored his gentle, smart step-son, Charles Xavier, to his own son, which led to Cain bullying the young Charles and Dr. Marko secretly beating Cain. Cain was abusive to his stepbrother at every opportunity. Charles' telepathic powers began emerging when he was still a boy, around ten, and, on one occasion, he found himself experiencing the anguished thoughts and emotions of Cain, after Cain had been beaten by his father. The inexperienced young Charles could not control or end his contact with Cain's mind at this time. Somehow, Cain sensed that Charles was reading his mind and had discovered his secret shame.

Sharon died shortly thereafter, of a broken heart, leaving Charles to live with his step-father and abusive step-brother. During an argument in Dr. Marko's private laboratory over money, Cain accused him of having a hand in Dr. Xavier's "accidental" death, at the disaster at Alamogordo. Dr. Marko was quick to be steadfast in defending himself, taking Cain by the collar of his coat and yelling at him to "never say that again". Charles was stationed outside the door, however, and overheard the conversation. When Cain realized, he intended to cause a ruckus, by destroying some of his father's chemical experiments, throwing a vial of green liquid that caused similar containers to shatter, spilling the chemicals throughout the laboratory. The collision of the different substances caused a violent explosion that left the lab aflame. Though Dr. Marko managed to rescue both Cain and Charles from the fire, he himself died of smoke inhalation. In his dying words, Dr. Marko begged forgiveness for not saving Dr. Xavier when he had the chance, and telling Charles to keep his powers secret from Cain. Cain was standing over, however, and heard of Charles' gift, which led him to believe that Charles had invaded his thoughts deliberately. From then on, Cain regarded Charles as his enemy.

Cain continued to live in the Xavier mansion, growing increasingly resentful of his step-brother's scholastic and athletic achievements as well as his telepathic powers (which Charles mastered as he grew older), while Charles entered England's Oxford University. Cain even pushed Charles too far one day and the two got into a fight, which Charles easily won. What happened to Marko after he left home was unclear. However, it was known that Cain became a mercenary and was eventually imprisoned in a Third World jail, when the revolutionary forces he was fighting for were defeated. In the jail, Cain became friends with a fellow mercenary, Black Tom Cassidy, who used his mutant powers to help them escape.

US Army

Later, Marko and Xavier found themselves serving together in the same U.S. military unit in Korea. Marko deserted under fire and Xavier went after him to bring him back. Xavier followed Marko into a cave, that housed the lost secret Temple of Cyttorak, a powerful mystical entity. Marko impulsively grabbed a glowing ruby from the lap of an idol and read the inscription (which mystically appeared to his mind to be in English): "Whosoever touches this gem shall possess the power of the Crimson Bands of Cyttorak. Henceforth, you who read these words shall become forevermore a human juggernaut." As Xavier watched, the gem's mystical power transformed Marko into a larger, superhuman being. Just then, enemy high explosive bombardment caused a cave-in and Marko was buried under several thousand tons of rock. Xavier survived and returned to his unit.

He served as one of Magneto's Brotherhood of Evil Mutants army after he was freed by Magneto from a mobile prison convoy.

Powers and Abilities


Avatar of Cytorrak: The Crimson Gem of Cyttorak bonds to the user's soul and makes him the avatar of Cytorrak, an Exemplar, by giving him this new body.

Superhuman Strength: The Juggernaut is sometimes listed to possess virtually limitless superhuman strength, and other times simply as class 90.

Superhuman Stamina: Juggernaut's body generates no fatigue toxins during physical activity, granting him nigh limitless stamina in all physical activities.

Super-humanly Dense Tissue: The Juggernaut's skin, muscle, and bone, is exactly 4 times denser than the same tissue in the body of a human being, greatly contributing to his superhuman weight.

Superhuman Durability: Cain is virtually invulnerable to all forms of physical injury.}

Regenerative Healing Factor: If damaged, Cain possesses a regenerative healing factor that enables him to completely regenerate with superhuman speed.

Self Sustenance: The Juggernaut is completely self sustained, he has no need to breathe, eat, or drink at all. He cannot tire, hence he cannot sleep, however his self generating mystical energies provide him with the nourishment of sleep, nutrition, hydration, and oxygen. He is sustained by his mystical energies alone.

Immortality and Immunity: Cain is immune to aging. The Juggernaut is also immune to all toxins, poisons, and disease.

Force Field: The Juggernaut is capable of generating a personal force field around himself, which greatly enhances his physical durability, to the point that the field was even able to withstand Thor's god-blast.

Embodiment of Irresistible Force: Once he begins to advance in a certain direction, it is virtually impossible to halt his movement. Some obstacles such as many tons of rocks and plasma-discharge cannons have slowed his pace but can't completely halt him. Thor's use of his god-blast allowed him to stop Juggernaut in his tracks.


Juggernaut is able to summon and remove his mystic armor at will. As a result of his days in the military and his experiences as a superhuman, the Juggernaut is a formidable hand to hand combatant preferring to use street fighting and brawling techniques that allow him to make full use of his great strength.

Strength level

Class 100+ (estimated); The exact limits of the Juggernaut's vast physical strength are unknown, however he is one of the few who can go toe-to-toe with the Hulk.


Cain is susceptible to exceedingly high levels of mental and mystical attack. Both have been shown to be able to harm him, but neither have been shown to cause any type of permanent injury. His weakness to mental attacks are typically nullified by his helmet. If Juggernaut does not use his powers for his own personal desires, the power of the gem does not work correctly and does not fuse with his soul, essentially making him a human with only a portion of some of his powers. Also, being infused with unstoppable force can be used against him, as Hulk did during one of their battles, deflecting Cain's charge, causing him to speed away, unable to stop himself.



  • Crimson Cosmos Armor: The Juggernaut wears a helmet fashioned from an unknown mystical metal found in the Crimson Cosmos dimension of Cyttorak. The Juggernaut subsequently fashioned a skullcap from scraps of the metal used to construct the helmet. This skullcap provides him with complete protection from telepathic attack even when this is from telepaths of the order of Professor Xavier. The Juggernaut originally wore a suit of armor that he could summon around himself at will from the Crimson Cosmos.

Transportation: None known.
Weapons: None known.


  • No special notes.


  • No trivia.

See Also

Discover and Discuss

Links and References

  • None.


Community content is available under CC-BY-SA unless otherwise noted.