Aeons are the first species to ever evolve in the universe, they're the ancient peacekeeping guardians of the planet Xaava-Dal.
They were benevolent and incredibly intelligent creatures that evolved first of all species in the universe. They kept the planet they lived on in great shape, leading it to become famous for its paradise-like beauty. When they received a piece of the Black Hole Generator, they became dark and sealed off the gem that kept them and the planet in their near-perfect shape. They transformed into Demon Bats after that, but were returned to their original shape thanks to the Turtles, April, Casey and the Fugitoid.
- The word aeon, also spelled eon and æon (in American English), originally meant "life", "vital force" or "being", "generation" or "a period of time", though it tended to be translated as "age" in the sense of "ages", "forever", "timeless" or "for eternity". It is a Latin transliteration from the koine Greek word ὁ αἰών (ho aion), from the archaic αἰϝών (aiwon). In Homer it typically refers to life or lifespan.
- Although the term aeon may be used in reference to a period of a billion years (especially in geology, cosmology or astronomy), its more common usage is for any long, indefinite, period. Aeon can also refer to the four aeons on the Geologic Time Scale that make up the Earth's history.
- The Aeons pure form resemble angels, while their corrupted form resemble demons.
- The Aeons have a third shinning eye on their foreheads, in some culures the third eye (also known as the inner eye) is a mystical and esoteric concept referring to a speculative invisible eye which provides perception beyond ordinary sight, stablishing the Aeons as enlightened beings.