There is a Legacy version here.

Aeon

Source GM Core pg. 326 2.0
These monitors are the self-styled defenders of reality. Traditional aeons have dualistic natures and forms, hold a dichotomy of interests, and communicate via a strange telepathic hodgepodge of sensory sending called envisioning. Axiomites and their creations are aeons, but don’t share all the characteristics of traditional aeons.