Gigantomachia does not feel anything. Pain Blocker severs every pain signal, inside the body and out, so nothing that hurts him ever slows him down and no injury interrupts his own attacks. Stacked with his other powers, it helps make him nearly unstoppable.
Pain Blocker is a close range Emitter type Quirk, one of several that Gigantomachia carries. It leaves the holder unable to register pain anywhere, internally or externally. With practice, the effect can be switched on and off at will.
Run alongside his native Endurance Quirk, it feeds directly into how much punishment he absorbs and how long he keeps swinging. He shrugged off a direct hit from Dabi's Blueflames, which burn far hotter than ordinary fire, without breaking stride. The benefit runs two ways: nothing that lands registers, and nothing that lands halts him.
Gigantomachia is the only known holder. Combined with the immense size of Gigantification, the hardened muscle of Fierce Gains, and the stamina conservation of Energy Saver, Pain Blocker pushes his physicality to the point that he can plow through whole cityscapes while trained warriors and Pro Heroes attack him, and never tire out.

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Pain Blocker is the pain manipulation Quirk carried by Gigantomachia, a close range Emitter power that leaves him unable to register pain anywhere in his body, inside or out.
Gigantomachia is the only known holder of Pain Blocker.
Yes, with practice Gigantomachia can switch the Pain Blocker effect on and off at will.
Because Pain Blocker keeps Gigantomachia from registering pain, nothing that lands on him ever slows him down or interrupts his own attacks. He shrugged off a direct hit from Dabi's Blueflames without breaking stride.
Alongside Pain Blocker, Gigantomachia carries Endurance, Gigantification, Fierce Gains, and Energy Saver, a combination that lets him plow through cityscapes without tiring.
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