170,000-Year-Old Cicada Larva

170,000-Year Magicicada Nymph (17万年ゼミ幼虫, 17 Man-nen Zemi Yōchū) was a Mysterious Being that attacked Z-City at some point during Saitama's training years. It was killed by Saitama.

Appearance
The Magicicada Nymph was a massive cicada-like creature. It had the face of a child at the center of its head.

History
It was supposed to be a larva underground during the season it popped out.

Summer
During Saitama's training years, the Magicicada Nymph attacks Z-City and defeats two C-Class heroes in Grad School Graduate and Red Muffler, and the B-Class hero Darkness Blade with ease while the rest of the population barricades itself within Shelter Nr. 7. Sometime later two unnamed A-Class heroes try to fight it, but are also defeated, which causes the Hero Association to declare it as a Demon-level threat and they decide to send one of their newly formed subjugation squads to finish it off. Saitama, while running around in search of a bathroom, runs into the Nymph who suddenly attacks him, but falls victim to Saitama's punch.

Abilities and Powers
The 170,000-Year Magicicada Nymph was shown to be strong enough to defeat multiple heroes and smash through buildings without taking any visible damage. It also defeated two A-Class heroes which prompted the Hero Association to deem it as a threat with a disaster level of Demon.

It can be inferred from its name that over some period of time, a Magicicada Nymph will grow into a 170,000-Year Magicicada Adult.

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Cigalarve Âgé de 170000 Ans