<Li> Sienna Miller as Anastasia DeCobray / Ana Lewis / The Baroness The sister of Cobra Commander and a spy . Years earlier , The Baroness was going to marry Duke , but he left her at the altar , due to his guilt over her brother 's apparent death . Miller auditioned for the part because it did not involve `` having a breakdown or addicted to heroin or dying at the end , something that was just maybe really great fun and that people went to see and actually just had a great time seeing . '' Miller prepared with four months of weight training , boxing sessions and learned to fire live ammunition , gaining five pounds of muscle . She sprained her wrist after slipping on a rubber bullet while filming a fight scene with Rachel Nichols . </Li>
<Li> Sienna Miller as Anastasia DeCobray / Ana Lewis / The Baroness The sister of Cobra Commander and a spy . Years earlier , The Baroness was going to marry Duke , but he left her at the altar , due to his guilt over her brother 's apparent death . Miller auditioned for the part because it did not involve `` having a breakdown or addicted to heroin or dying at the end , something that was just maybe really great fun and that people went to see and actually just had a great time seeing . '' Miller prepared with four months of weight training , boxing sessions and learned to fire live ammunition , gaining five pounds of muscle . She sprained her wrist after slipping on a rubber bullet while filming a fight scene with Rachel Nichols . </Li>
who plays anna in gi joe rise of cobra
who plays anna in gi joe rise of cobra
Sienna Miller
Sienna Miller