Tywin Lannister: And what do they say of Robb Stark in the North?

Arya Stark: They call him the young wolf. They say he rides into battle on the back of a giant Direwolf. They say he can turn into a wolf himself when he wants. They say he can't be killed.

Tywin Lannister: And do you believe them?

Arya Stark: No, My Lord. Anyone can be killed.