Gamora (Marvel Cinematic Universe)

Gamora is the heroine from Guardians of the Galaxy.

Guardians of the Galaxy
Gamora is a brave alien who lost her family and has been forced to become a lethal assassin. Her goal is to keep the diabolical Ronan the Accuser from harnessing an orb's power to conquer the universe. Her rivalry with Peter Quill gets her shut away in prison. However, aided by Groot, a talking tree, Rocky, a comical raccoon, and Drax the Destroyer, a powerful bruiser, she manages to escape. Gamora and her friends butt heads a lot, but she aids them every step of the way and is willing to help them defeat Ronan and save the galaxy.

Trivia

 * Gamora is played in the film by Zoe Saldana, who also played Neytiri for Avatar.