Rumor Mill Keanu Reeves in negotiations For The Eternals.

In 1970, Jack Kirby left Marvel Comics to work at DC Comics, where he began the saga of the New Gods, an epic story involving mythological and science fiction concepts, and planned to have a definite ending. However, the saga was left incomplete after the cancellation of the titles involved. Kirby began The Eternals when he returned to Marvel. The Eternals' saga was thematically similar to the New Gods', and the series was also eventually canceled without resolving many of its plots. Writers Roy Thomas and Mark Gruenwald used the Eternals in a Thor storyline that climaxed in Thor #301,[1] resolving those lingering plotlines. Subsequent to the Thor storyline, the Eternals (and the mythology connected to them) have appeared or been mentioned in numerous Marvel comics. In particular, the Celestials' experiment on humanity has been used to explain how certain humans can develop super-powers. The Titanians (created by Jim Starlin) and Uranians (created by Stan Lee) were later retconned as being Eternals as well.

The Uranians are a fictional race appearing in American comic books published by Marvel Comics. They first appeared in Marvel Boy # 1 (1950), written by Stan Lee, as the human-like inhabitants of the planet Uranus, who became the hosts and mentors of Marvel Boy (Robert Grayson), as well as providing him with the technology which he used on Earth to become a superhero. Originally described as a utopian society of extraterrestrials native to Uranus who had found scientific cures for aging, disease, crime, and other ills, they were later[1] retconned as a colony of the Eternals, an offshoot of humanity which possessed near-immortality, super-powers and vastly advanced technology even before founding their colony.

The Eternals are a fictional species of humanity appearing in American comic books published by Marvel Comics. They are described as an offshoot of the evolutionary process that created sentient life on Earth. The original instigators of this process, the alien Celestials, intended the Eternals to be the defenders of Earth, which leads to the inevitability of war against their destructive counterparts, the Deviants. The Eternals were created by Jack Kirby and made their first appearance in The Eternals #1 (July 1976).

Thanos was born on Saturn's moon Titan as the son of Eternals A'lars and Sui-San; his brother is Eros of Titan. Thanos carries the Deviants gene, and as such, shares the physical appearance of the Eternals' cousin race. Shocked by his appearance and the belief that he would destroy all life in the universe, Sui-San attempted to kill him, but she was stopped by A'lars. During his school years, Thanos was a pacifist and would only play with his brother Eros and pets. By adolescence, Thanos had become fascinated with nihilism and death, worshipping and eventually falling in love with the physical embodiment of death, Mistress Death.