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170,000-Year Magicicada Adult (17万年ゼミ成虫, Jūnana Man-nen Zemi Seichū) was a large Mysterious Being that attacked Z-City at some point during Saitama's training years. It was killed by Saitama.[2]


The Magicicada Adult was an extremely massive cicada-like creature, easily able to cast a large shadow over a city. Located at the center of it's head was a humanoid face.

Appearances in Other MediaEdit



170,000-Year Magicicada Adult attacks Z-City damaging many buildings. Saitama then appears before it and declares with a smile that summer has arrived.

Abilities and PowersEdit

Since it was the grown up version of the 170,000-Year Magicicada Nymph, it was presumably much more powerful. Even S-Class heroes might have had difficulty dealing against it due to its resistant shell and its ability to fly.[1]

Flight: The Magicicada Adult's wings allowed to fly.


  1. 1.0 1.1 1.2 1.3 One-Punch Man Encyclopedia; One-Punch Man: Hero Perfection, page 183
  2. Summer


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