Quotes: Sealed Evil in a Duel

Joker: I think you and I are destined to do this forever!
Batman: You'll live in a padded cell forever!
Joker: Maybe we could share one.

Barbossa: So what now, Jack Sparrow? We be two immortals locked in an epic battle until Judgment Day - trumpets sound, hm?
Jack: Or you could surrender.
Pirates of the Caribbean: The Curse of the Black Pearl

Avacyn emerged from the broken Helvault, but her freedom came at a price—him.
Thalia, Knight-Cathar, Magic: The Gathering, Griselbrand flavor text

Raava: My name is Raava. That spirit you freed is Vaatu. He is the force of darkness and chaos. I am the force of light and peace. Since the beginning of time, we have battled over the fate of this world. And for the past ten thousand years, I have kept darkness under control and the world in balance.