The Eternal with an affinity for humanity, Sersi has the ability to manipulate matter, changing the make-up of any non-sentient material she touches.

The Eternals are a race of immortal aliens from a distant planet who arrived on Earth thousands of years ago to protect humanity from a race of alien predators called Deviants. The Eternals were alerted to the Deviant threat by the Celestials, a race of cosmic builders whose fingerprints are on the very building blocks of life itself. .