Origin
Gaea is Mother Earth, the base of all living things. According to the Greeks she came from Chaos, and brought order. She then mated with Uranus, and when the sky and earth came together they brought the mighty Titans. Later, when Gaea asked for her children to stand with her to fight Uranus, only Cronus came to her aid, and eventually killed his father.
Image Comics
Gaea appears in the spawn universe comics as one of the children of Mother of Existence alongside God and Satan. She rules the Greenworld and has formed the Emerald Parliament to rule in her place while she deals with some of her rebellious siblings in their prison.
Powers and Abilites
Gaea is able to create almost any effect she desires. She can also bestow her powers on others, as seen with Wonder Woman.