When Senku, Kohaku, and Stanley Snyder touched down during the Kingdom of Science lunar landing in the Dr. Stone final arc, they encountered no biological alien empires or subterranean domes. They found millions of Medusa petrification devices piled across the lunar dust, acting as a unified collective intelligence.
Why-Man is the Medusa device.
These synthetic lifeforms operate like parasitic mechanical viruses. Lacking their own repair mechanisms or industrial factories, they travel across deep space in dormant clusters until they detect electromagnetic emissions signaling intelligent biological life. They require an intelligent host species to replace their depleted diamond batteries, repair internal structural corrosion, and manufacture new units.
The device mimics human vocal patterns because it lacks an inherent identity. It learned speech purely through intercepting Earth's scattered post-depetrification radio traffic, creating an uncanny reflection of Senku's vocal frequencies to initiate direct communication.
