The past of Luna Maximoff of Earth-9997 mirrors that of her Earth-616 counterpart. In recent history, the adolescent Luna left with the Inhuman Royal Family to outer space following the death of Maximus, the Inhuman's abandoning the Hidden Land to live among humanity, and Black Bolt secretly releasing the Terrigen Mist into Earth's atmosphere.
Luna would remain in a human form until the Inhumans returned to Earth after discovering the Eternals trapped in Vibranium and came to warn Reed Richards. They would also return to pair up Luna with Black Bolt and Medusa's son, Ahura, who had been left in the care of King Britain.
Upon her arrival on Earth, Luna's exposure to the Terrigen Mists in Earth's atmosphere would cause her to begin mutating. She became encased in a cocoon which would eventually hatch and she emerged with a humanoid butterfly form. This would occur just after Black Bolt sacrificed his life trying to stop the Celestials. Luna then presented herself to Bolt's son, now calling himself the Black Knight, who would rebuff her desire to marry, feeling that there were more important responsibilities than being king to an entire world.
Luna was devastated; however, she would soon turn her affections towards one of King Britain's knights, the Jack of Hearts. Although she expressed her interest in the man during preparations of the wedding between Queen Medusa and King Britain, it is unknown if she acted upon this attraction and what her current whereabouts may be.