Okamoto Tao, known professionally as Tao, is a Japanese actress and model. She made her film debut as the female lead Mariko Yashida in the 2013 film "The Wolverine"; and also played Mercy Graves in the 2016 film "Batman vs Superman: Dawn of Justice". She also had recurring roles in the television series "Hannibal", "The Man in the High Castle" and "Westworld".