


Having correctly detected that GLaDOS killed every Aperture employee, AEGIS began calculating a way to destroy the now-deactivated GLaDOS permanently. Some time after the events of Portal after the shutdown of GLaDOS, but before the events of Portal 2, AEGIS came online. Despite this, AEGIS is somehow in the upper facility of the modern Aperture Science Enrichment Center, possibly being moved there between the company's migration from the aging Aperture Science Innovators testing shafts. It's design and construction, consisting of 1950's era mainframe parts and sporting a 1960's Aperture Science logo, suggest AEGIS was built even before the GLaDOS project began development of Aperture's AI constructs. AEGIS' responsibility in the Enrichment Center is, as its name implies, to ensure the safety of all Aperture employees.Īlthough AEGIS is an artificial intelligence, it does not display any sort of personality or will.

The Aperture Employee Guardian and Intrusion System or AEGIS is the central security system of the Aperture Science Enrichment Center and the main antagonist of Portal Stories: Mel.
