Sidekick: Lisbeth Salander of The Girl With the Dragon Tattoo (played by Rooney Mara)
Associate of: Mikael Blomkvist (played by Daniel Craig)
When investigating decades-old kidnappings, disturbed computer hacker Lisbeth Salander is obviously an invaluable asset. She also comes in handy if you want anyone tortured within an inch of his or her life.
[Photo Credit: MGM Columbia Pictures]