170,000-Year-Old Cicada Adult

The adult cicada ranks among the most enormous creatures in the setting, its bulk broad enough to blanket an entire city in shadow. Set into the middle of its head sits a single human-like face, the one feature that breaks up its otherwise wholly insectoid form.

The creature never displays anything resembling a distinct temperament, and the source records nothing about how it thinks or behaves.

Rated a Demon-level threat, this fully matured stage is understood to outclass its larval form in raw power. A hardened outer shell shrugs off punishment, and a working set of wings lets the giant take to the air, a pairing that could trouble even the upper ranks of the Hero Association. Its sheer scale alone grants tremendous physical force, mirroring the younger form that already flattened buildings and overpowered A-Class fighters.

When it descends on Z-City during Saitama's training years, the bald hero meets it with a grin and a remark that summer has come, then finishes the fight off the page.