Selene Gallio is a supervillain appearing in American comic books published by Marvel Comics. As a mutant and an enemy of the X-Men, she is often associated with the Hellfire Club's Inner Circle. Selene was portrayed by Kota Eberhardt in the 20th Century Fox X-Men film Dark Phoenix (2019). A character based on the Marvel Comics character was previously portrayed by Kate Beckinsale in the Sony Pictures Underworld film series (2003–2016). Publication history Selene first appeared in New Mutants #9 (November 1983), written by Chris Claremont and illustrated by Sal Buscema. Fictional character biography Selene is the oldest known human mutant. Functionally immortal, her millennia-long life is attributed to her ability to drain the life essence from other beings to extend her own existence indefinitely. Her name derives from the ancient lunar goddess Selene, daughter of the Titans Hyperion and Theia. Claiming to have already been old when modern mankind was just emerging, Selene was born over 17,000 years ago, somewhere in what is now Central Europe, "after the Oceans swallowed Atlantis and before the rise of the Aryas". Her tribe's elders recognized her for what she was and commanded the entire tribe, including her own mother, to sacrifice their lives to feed her. Hyborian Age Selene was revealed to have been an old enemy of the sorcerer Kulan Gath. Kulan Gath was active during the Hyborian Age (before any recorded civilizations) and is known to have faced both Conan the Barbarian and Red Sonja. In fact, Sonja reportedly managed to kill him and his spirit would not manifest again until the modern era. Thus, Selene was active at least as early as the Hyborian age. Rome and Eliphas Selene came to reside in Rome during the height of its empire. She approached Eliphas, a well-respected senator whose wife had left for a general named Mascius. Selene offered Eliphas immortality in exchange for helping her kill and absorb every soul in Rome. Eliphas went about drawing pentagrams and performing rituals at several locations in the city, but warned a small girl to get her family out. The girl's father alerted the authorities and Eliphas and Selene were captured before the spell could be carried out. Just before they were burned at the stake Selene killed the guards. She then cursed Eliphas for the perceived betrayal with an eternal life of torture, transforming the latter into a vampire-like creature. Eliphas was