The Eternals are a group of immortal beings created by the Celestials, who were tasked with protecting humanity from the Deviants, their monstrous counterparts. They have been on Earth for thousands of years, influencing human history and culture.
Each Eternal has unique powers, such as superhuman strength, flight, and energy manipulation. Despite their abilities, they are bound by a code not to interfere with human affairs unless Deviants are involved.
The Eternals are led by Ajak, who communicates with the Celestials, and their numbers include powerful beings like Sersi, Ikaris, and Thena. Their storyline explores themes of duty, identity, and the impact of their long existence on their perception of humanity.