RedGraveXIII
Neo Member
Thats how its always been in the japanese releases.
And to be honest the greek story that the name is based off of is also spelled aegis.
Never understood the reason for changing it, same with Aeris/Aerith.
I remember reading an interview with the localization team where they mentioned that they did it because they wanted a spelling of "Aegis" that matched the Japanese pronunciation of that word, which is why they went with "Aigis" since it IS a proper spelling of the word in some other dialect or something.