Gamora is the newest member of the Guardians of the Galaxy to get a meet-and-greet featurette from Marvel Studios. Played by Zoe Saldana, Gamora is the adoptive daughter of Thanos--the big bad behind Marvel's The Avengers--and while nothing has been made of that yet, it's likely to be a key plot point as, in the comics, it's Thanos who's responsible for most of the obstacles the Guardians face, and the death of Drax's family. Whether he'll know at the start that he's teamed with the daughter of Thanos, or find out later and sparks will fly, is a good question. "Gamora is this stealth assassin," said Saldana. "She's relentless, she's lethal, she's rough--she can kill you but has a heart of gold, and I like that about her."