First look at Angelina Jolie as Thena in 'The Eternals'

Titan 
Sui-San - Descendant of Uranos's followers on Titan. She was the only survivor of the war on the surface of Titan. She was found by A'lars who, with her, founded the new Eternals of Titan. Sui-San's children included Eros and Thanos. She was slain by Thanos during his attack on Titan when he dissected her with a medical kit, hoping to learn why he was different from other children.
Mentor (A'lars)- Assumed the position as head of the Eternals of Titan. Son of Kronos, brother of Zuras, father of Eros and Thanos.
Thanos - Son of Mentor and Sui-San, brother of Eros. Is a Mutant Eternal with purple skin and a ridged chin, plus more power than a typical Eternal of Titan, including energy blasts, psionic abilities, and teleportation. Raised the child Gamora, and trained her to become the ultimate assassin.
Starfox (Eros)- Titanian Eternal, child of Mentor and Sui-San and younger brother of Thanos. Became known on Earth as a hero. Former member of the Avengers, under the alias "Starfox". Has the power to control the emotions of others