Keira is the sister of Adam, Jax, Max and Mikhail Sage. Their parents remain something of a mystery; her father's whereabouts remain unknown, but her mother was killed by Inquisitor Seren Teancum Mordavo when Keira was a child. Like her siblings, Keira was raised without the benefit of Jedi teaching; unlike many of them, she never fully came into the fold. She raised and trained herself in the slums of Metellos, a street kid with bizarre powers, always on the run from the Inquisitors.