Prologue: "The Fall of a Kingdom"

Arendia Argyros is an Edenian and is the Crown Princess of Edenia. Long ago, when there was peace on her planet, the realm was a civilization of inhuman beings who had the power to heal, the ability of super strength, flight, telekinesis, and more. They lived in harmony with Krpton, their sister planet before it was destroyed. They went into hiding their identities since. A war broke out in Edenia as some of the citizens didn't like them going into hiding. A democratic war emerged, having her life was endangered on her planet, her parents sent her to Earth to be with Kal-El (Clark Kent) to protect her.

Now, she is recruited by Batman after being persuaded by Superman. And is the healer and medic of the Young Justice team!