Q- What is your fav enemy?

A-

Harmony- Favorite? I haven't encountered many, but from my experience Darling, Madame Kovarian.

River- Oh sweetie. Bless. It would have to be the Weeping Angels, because of my parents. Well... Doctor, Sweetie, what's your answer?

The Doctor(Eleventh)- The Silence. No doubt about it. They will be defeated. No matter what.