
Thanos
Thanos
Character profile
Kronos
An Eternal who blew himself up and came back as a cosmic abstraction.
Kronos ruled the Eternals of Titan until an experiment into the fundamental nature of existence destroyed his physical body and released him as a being of pure cosmic energy, effectively an abstract entity concerned with time. He is the father of Mentor and Zuras, which makes him the great-grandfather of Thanos, and Marvel's Titan mythology runs directly through him.
His most consequential act was creating Drax. When Thanos murdered the Douglas family on Earth, Kronos took Arthur Douglas' soul, built it a purpose-made body and named the result the Destroyer, aimed at his own descendant. He debuted in Iron Man #55, the same issue that introduced Thanos, Mentor and Drax, which makes it one of the densest single issues in Marvel's cosmic history.
Rated 1–7 on the classic Marvel power-grid scale.
Kronos exists as pure energy, functionally immortal and indestructible.
He observes and operates across the timestream as a cosmic abstraction.
He built Drax the Destroyer from a dead man's soul and a purpose-designed body.
Within his domain he reshapes matter, energy and probability.
He perceives events across interstellar distances and multiple eras.
Iron Man #55 in 1974 introduced Kronos alongside Thanos, Mentor and Drax, establishing the Titan branch of the Eternals and the family conflict that has powered Marvel's cosmic line ever since. Starlin used him as the architect behind the anti-Thanos campaign, working through created champions rather than directly.
Later stories tied him more firmly to the wider Eternals mythology and to Marvel's handling of time as a cosmic principle, and he has resurfaced whenever writers need a cosmic authority with a personal stake in the Titan bloodline.
I have measured time from both sides of it. My descendant will not outlast me.
I did not make you to be happy. I made you to finish something.
Debuts in Iron Man #55 alongside Thanos, Mentor and Drax.
Creates Drax the Destroyer to hunt Thanos.
Established as a cosmic entity concerned with time.
Reappears as Marvel expands the Eternals of Titan mythology.

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