Thanos was born on Saturn's moon Titan as the son of Eternals A'lars and Sui-San, the grandson of Kronos, the nephew of Zuras, and the grandnephew of Oceanus and Uranos. 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 went insane and attempted to kill him, but she was stopped by A'lars. During his school years, Thanos was a pacifist Thanos Rising #1. Marvel Comics. and would only play with his brother Eros and pets. By adolescence, Thanos had become fascinated with nihilism and entropy, worshipping and eventually falling in love with the physical embodiment of Mistress Death.Thanos Rising #3, Iron Man vol 1 #55. Marvel Comics.
