Plutonia is a member of the Imperial Guard, a multi-ethnic group of super-powered alien beings who act as enforcers of the laws of the Shi'ar Empire. Part of the division of the Imperial Guard known as the Superguardians, the enigmatic Plutonia was one member of the injection team that attacked were sent to attack the X-men on the orders of their Empress Lilandra, who was at the time under the mental control of Charles Xavier's mutant evil twin sister Cassandra Nova.[2]

Prior to the battle, Plutonia set off to investigate an alarm signal that was being broadcast across the Imperial broadband wavelength. She discovered her fellow Guardsman and lover, Smasher, who had been sent to Earth by Lilandra prior to her possession to warn the X-Men of Nova's actions. She returned with Smasher to the X-Men's headquarters in the Xavier Institute just in time to convince the Guard's praetor, Gladiator, of the true threat. Together, the Guard and the X-Men managed to defeat Nova and free Lilandra.[3]

Working with her fellow Guardsman to investigate the breach in space known as the Fault, the Guard found themselves under attack by the living universe within. Realizing their doom was imminent thanks to the timely arrival of Quasar, who'd been trapped within the alternate universe, the Guard made preparations to leave. Realizing they lacked the proper firepower, subversive Raptor member Talon, who'd initially been impersonating Smasher, offered the Guard two of the Raptor amulets, but at the cost of their free will. Guard praetor Mentor offered himself up, and Plutonia, in love with Mentor, offered herself up as well, becoming the Raptor Kyte and helping the Guard escape the Fault. Her current whereabouts are unknown.[4]

Plutonia was later replaced by another member of her species.[5]


Plutonia possesses the ability to alter her body's molecular density to the point where she becomes intangible, allowing physical attacks to pass through her without harm. She can also disrupt the function of living organisms by passing through them whilst intangible.


Given that Plutonia's body generates intense levels of an unknown form of radiation, she must wear a special containment suit that covers her from head to foot.

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