Vulture reports that Matthew Fox and Ed Harris have taken their respective auras of masculine confidence away from World War Z, the Brad Pitt-starring adaptation of Max Brooks’ book about one of just several potential zombie apocalypses. While early reports seemed to suggest they were locks for their unspecified roles, Fox has now bowed out due to his commitment to I, Alex Cross, the forthcoming thriller in which Tyler Perry will Tyler Perry's show everyone, damn it. Ed Harris’ reasons for backing away from the deal are less clear as of now, though they definitely do not involve Tyler Perry. (Unless there’s a House Of Payne marathon.)