It was announced today that Zoe Saldana is in talks to join the cast of Guardians of the Galaxy as Gamora. This adds to Saldana's fairly busy schedule which includes the release of Star Trek Into Darkness along with filming two Avatar sequels.
Here is some background on Gamora if you are unaware:
The last of the species Zen Whoberi, Gamora was found and trained by Thanos as a young child. She became a skilled martial arts assassin (nicknamed the deadliest woman in the galaxy) loyal to Thanos as be promised her the chance to avenge her parents' death. As a teenager she was raped and nearly killed by thugs that Thanos later killed. He restored her health and gave her superhuman qualities.
Gamora later joins Drax the Destroyer and The Avengers in a battle against Thanos after seeing what a threat he truly is. She even attempted to slay Thanos herself.
Now... with that all said, I can see why they cast Saldana. She is fairly tough and has done a lot of green screen/motion capture work with Avatar. I accept.
Previously cast was Chris Pratt as Star-Lord and Dave Bautista as Drax the Destroyer. James Gunn (Slither, PG Porn) is directing and moving quickly to make the August 1, 2014 release date.