Neuralyzer

The neuralyzer is a device used by the Men in Black to alter the memories of any non-MiB who encounter alien activity on Earth. The neuralyzer activates by flashing a burst of energy into the target's eyes, erasing a specific amount of time from their memory- as little as a few minutes, or a retiring MiB agent's entire career. The target then becomes extremely suggestible, giving a MiB agent the option to describe a new set of memories to them. The only way to avoid the neuralyzer's effects is by wearing MiB-issue sunglasses. The neuralyzer's alterations can be reversed with a de-neuralyzer, but such devices are extremely rare.

Films

A giant neuralyzer was contained within the Statue of Liberty's torch, capable of neuralyzing all of New York City.

Series

A giant neuralyzer was located within the Empire State Building, capable of neuralyzing all of New York City.