Sersi is a fictional character from Marvel Comics, first appearing in "The Eternals" #1 in 1976. She is a member of the Eternals, a race of superhumans created by the Celestials. Sersi possesses the ability to manipulate matter at a molecular level, allowing her to transform objects and create energy blasts. In the comics, Sersi is known for her vibrant personality and love for humanity, often living among them. She has been a part of various superhero teams, including the Avengers, and has appeared in multiple storylines, showcasing her powers and complex relationships with other characters in the Marvel Universe.