Gamora

Gamora was one of the main characters of the Marvel Cinematic Universe. Her alternate self from 2014 is possibly alive and misplaced in the year 2023.

Leaving Thanos
Gamora, tired of killing for Thanos and hearing that he will use an artifact known as the Orb to destroy Xandar, decides to leave his services and steal the Orb for herself to sell it on the black market to a buyer, known as the Collector.

Battle of Xandar
Gamora joined Quill, followed by Drax and Rocket, sharing the power with the Infinity Stone and together, they destroyed Ronan. After his demise, Gamora with the rest of her strength, quickly puts the Power Stone in a containment, thus relieving the Guardians of the stress of its power and ending the battle on Xandar.

Post-Battle of Xandar
Yondu appears, demanding for the stone as promised. Gamora asks Peter not to hand it over, but they do not convince the Ravagers. After Yondu, Kraglin and the other Ravagers depart, Peter reveals to Gamora he switched the orb containing the real infinity stone with a false one. After briefly laughing about it, Gamora points out Yondu was going to kill Peter, to which Quill responds that he knows that but also points out Yondu was the only family he had left. However, Gamora assures him he has found a new family with the Guardians. The team later grieves for the loss of Groot.

Guardians Assembled
Gamora was with Peter when he learned that he was half-human and half-alien, which presents with her saying that's why he held the power stone as long as he did. Later abourd their ship, Gamora notices Peter listening to Ain't No Mountain High Enough and begins moving a little bit to the beat. Gamora states they will follow his lead, and calls him by his alias. Peter claims they'll do "a bit of both."