Fun fact: Gamora has earned herself the title "The Deadliest Woman in the Universe." For those of you who don't follow Marvel, the universe is pretty well established, so this is a big title for her to live up to. Sole survivor of her race, Gamora was rescued and raised as a child by Thanos (Big baddie at the Avengers credits). Thanos and Gamora eventually have a falling out and her allegiances change, eventually joining the Guardians of the Galaxy. She wields a dagger named Godslayer and has a healing factor greater than Wolverines! She'll be part of the main focus of the upcoming film Guardians of the Galaxy.