Thanos was one of the last sons of A'Lars, progenitor of the second colony of Eternals on Titan, and Sui-San, the last survivor of the original settlement of Eternals on Titan. Born with grey, hide-like skin and a massive body due to his Deviant Syndrome, Thanos was a morose child who became obsessed with the concept of death.
Through bionic implementation and long hours of meditation, Thanos augmented his Eternal strengths and powers so that his abilities surpassed those of all other Titanian Eternals.
As he grew in power, Thanos also grew in ambition and desire for conquest. Thanos stole one of his people's starships and traveled to other star systems to recruit soldiers, mercenaries, and malcontents for a private army. With a small fleet, he dropped nuclear devices on his home world Titan, killing thousands of his people, including his mother Sui-San. Declaring himself ruler of Titan, he then set his sights on Earth.
|Ant-Man ● Black Knight ● Black Panther ● Black Widow ● Captain America ● Captain Marvel ● Hawkeye ● Hellcat ● Hercules ● The Hulk ● Iron Man ● Jocasta ● Kang the Conqueror ● Mantis ● Mockingbird ● Moondragon ● Quicksilver ● Red Skull ● Scarlet Witch ● She-Hulk ● Swordsman ● Thanos ● Thor ● Tigra ● U.S. Agent ● Ultron ● Vision ● War Machine ● Wasp ● Whisperer ● Wonder Man ● Yellowjacket|