Daniel X: Armageddon is the fifth installment in the Daniel X series by James Patterson. Armageddon was published by Little, Brown for Young Readers in the October of 2012. The main character, Daniel X, is a teenager from Alpar Nok sent to Earth to protect it from the most dangerous alien criminals in the galaxy. In Armageddon, the setting takes place in the 2000s, and Daniel X has to bring down an alien known as "Number 2," the second most powerful criminal, and is literally, The Devil.