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I am the Ultimate Life-form Gigakigan!

Gigakigan (ギガキガン, Gigakigan) was a Mysterious Being who was a rock with his own will. He was killed by Tatsumaki.[1]


Gigakigan has a humanoid appearance, his entire body is made of rocks. Two horns can be seen protruding from either side on his head.


Gigakigan considers himself the ultimate life form. He holds a grudge against humans for wiping away his comrades "the minerals" through mining. As such, eradicating humanity became his goal.


He had been enveloped in magma and collected energy for over a thousand years before awakening. During those thousand years, he witnessed his fellow brethren be mined away by humans.

Appearances in Other Media


Tatsumaki's Day Off

He awakens in an unknown city and prepared to wreck havoc, but is quickly defeated by Tatsumaki.[2]

Abilities and Powers

Gigakigan Awaken

Gigakigan awakes

Gigakigan has been shown to possess impressive physical strength and durability.

Physical Abilities

Immense Strength: Gigakigan was able to effortlessly push a cliff-side apart.

Immense Durability: Gigakigan withstood years of magma and smoldering.


  1. Tatsumaki's Day Off
  2. One-Punch Man Manga; Tatsumaki's Day Off


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