Fox will allegedly take the role of "Parajumper", while Harris' role is currently unknown. "World War Z" will also see Pitt portraying a researcher for the U.N. Postwar Commission. Enos will play Pitt's wife, and Dale will star as Captain Speke.
Production of the movie is scheduled to start this month and take place in Malta, London and other places overseas. This comedy action movie, which has Marc Forster serve behind the lens, will hit U.S. cinemas in 2012.
Fox has starred as Dr. Jack Shephard on ABC's series "Lost", a drama that helped him win 2010 Scream Awards for Outstanding Television Performance. As for Harris, he is known for his performances in some movies including "The Rock", "Apollo 13", "A Beautiful Mind" and "That's What I Am".