who is gamora's sister
Gamora is an alien who was an adopted daughter of Thanos. She is the adopted sister of Nebula. She was portrayed by Zoe Saldana.
âNebula and Ronan the Accuser. Nebula is a Luphomoid assassin and an adopted daughter of the intergalactic warlord, Thanos. She is also the adopted sister of Gamora. She served as the right-hand woman of Ronan the Accuser during his and Thanos' quest to retrieve the Orb. Raised in the service of the interplanetary warlord, Thanos, Nebula trained to be a Galaxy-Class Killer under the tutelage of Ronan the Accuser.