English borrowed aegis from Latin, but the word ultimately comes from the Greek noun aigís, meaning “goatskin.” In ancient Greek mythology, an aegis was something that offered physical protection.

The spelling "Aegis" as appears in the original Japanese region titles is technically a misspelling of アイギス in English. The correct spelling, "Aigis" is the acceptable rendering of the original Greek. In fact, Aigis is the preferred spelling of the proper noun by contemporary academic standards.

Bodyguard Crush — Aigis has a crush on Makoto, and she will protect him at all costs. Though this is at first because Makoto has Death inside him, as she becomes more human, Aigis begins to protect Makoto for her own feelings. Chastity Couple - Makoto and Aigis can't be physically intimate due to Aigis being a robot.

The Answer Orpheus becomes Aigis' Persona. During a heated battle against Metis, Aigis summons Athena. At the same time, she awakens to a new Persona and Athena metamorphosed into Orpheus.