"The key to Varys is that he's one way in public, when he's working, very fey, giggly, and effete for want of a better word, but there are moments when he drops all that and speaks honestly. That stuff is great to play. When Ned asks Varys who he truly serves, and Varys answers, "The realm," I think that's true. There's a moral code there... He sees in Tyrion someone who plays the game well, and Varys loves playing the game. Ned was too honorable and too good - he disdained the game."
In Game of Thrones, Hill is playing the role of Varys. He was confirmed in the role on 15 July 2010. He initially appeared as a guest star in the first season and joined the starring cast for the second season. He also voices the character of Varys in the Game of Thrones role-playing computer game.