- This Eternals Marvel Legends Ikaris 6-inch Action Figure includes an alternate head and alternate hands to create poses straight from the movie. 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.