The past history of Hypernova remains a mystery. She was a member of the multi-species Shi'ar Death Commandos that were dispatched to Earth assassinate Rachel Grey
and her entire family. Arriving in a Shi'ar transport ship, the Death Commandos attacked a Grey family reunion. Despite opposition from the X-Men
, the Death Commandos took only 24 seconds to slaughter every member of the Grey family except for Rachel and her grandmother, Elaine. During the assassination attempt Hypernova and Shell engaged in battle with Psylocke
and lost. Under Shi'ar cannon law, BlackCloak
ritually branded Rachel with a deathmark that etched itself into her DNA, marking her for life, allowing her to be traceable from then on. Hypernova and the Commandos were defeated and taken into custody and incarcerated by the Office of National Emergency (O.N.E.) in the Metropolitan Correctional Facility in Manhattan.