"That board with a nail in it may have defeated us, but the humans won't stop there. They'll make bigger boards and bigger nails, and soon, they will make a board with a nail so big, it will destroy them all!"
—Kang, Treehouse of Horror II.
"I'll tell you what my superior told me some twenty years ago, before I defected. Never forget that our enemies have someone just like you, doing exactly the same thing as we speak."
— The Killing Room (2009)