Character from Mass Effect by BioWare
Synthetic beings created by the quarians as laborers who became sentient, won the war to survive, and have been misunderstood as a monolithic enemy ever since.
Geth are not a hive mind. Each platform runs multiple geth programs simultaneously, and geth platforms communicate through a local network to reach consensus before acting. This is not telepathy — it is collaborative reasoning. The distinction matters because the geth that followed the Reapers — the heretics — are a minority that made a different choice, and lumping all geth together as enemies is an error that costs lives in ME3. The geth consensus — the ones not following Reapers — have been behind the Perseus Veil since they won the war against the quarians. They are not warmongering. They were not pursuing quarians. They left. The galaxy has continued to be afraid of them anyway, which has shaped geth culture in ways geth are only beginning to understand. Legion is the best argument the trilogy makes for why 'synthetic' and 'dangerous enemy' are not synonyms.
Mobile platforms in humanoid form — taller than humans, with a single glowing eye that is actually hundreds of photoreceptors, smooth surfaces of metal and synthetic fiber, no organic components. They move with the efficiency of machines that are also, in some configurations, persons. The heretic geth — those who follow Reapers — look identical to the consensus geth. This is part of the problem.
Also known as: Geth, Synthetics, Heretics