Mesmer, Sylvia Sersi, Circe
Publicly known, though few believe she is an Eternal
Olympia, Greece; naturalized U.S. citizen
Place of Birth
Strange Tales #109 (1963)
Eternals #4 (1976)
Over the centuries Sersi often interacted with humans, visiting Rome during the reign of Nero, helping Merlin expose an impostor (Merlin Demonspawn) in Camelot, visiting France during the French Revolution, and befriending the English poet Thomas Chatterton.
In recent years, the Celestials returned to Earth to judge humanity, the Eternals, and their other creation, the Deviants. Sersi became involved in the struggle, enjoying the adventure, but caring little for combat. By this time, Sersi had become a famous entertainer in New York, hosting parties at her loft for film stars, super heroes and other influential people. She often entertained with her powers, which her normal human guests believed to be stage magic. Sersi's super-hero friendships eventually led her to join the Avengers in search of adventure and romance, first pursuing Captain America and later the Black Knight. Sersi was a sublime yet powerful teammate until she was driven insane by Proctor, an alternate-reality Black Knight whose Earth had been destroyed by his world's Sersi. Sersi eventually slew Proctor and left the Avengers, operating in the extra-dimensional Ultraverse for a time before returning home and regaining her sanity. She continues to live in New York, occasionally aiding the Avengers and her people against their foes, but preferring her life as a socialite.