Medea was a witch and wife of Mars. It was with him, who had her first child, Eden. Her name comes from a character in Greek mythology of the same name, who was also a witch.
Alongside his younger brother (Amor), Medea handles Mars into a world of darkness is created for her, and her son (not his brother and his stepdaughter, Sonia). It invokes a meteor that back to Earth, Abzu, which divides the Earth elements in 7 to arrive on the planet. Mars die, Medea uses her power to give to his brother, and this to transmit its power to the host of Abzu, discovers that nothing works as it should, and so finds out that Medea betrayed him too. In the end, Eden decides to counter the mother and fight Abzu, and with that, Medea repents and dies trying to protect him.