Kiefer Sutherland Jack Bauer Actor Mary Lynn Rajskub Chloe O'Brian Actor James Morrison Bill Buchanan Actor DB Woodside Wayne Palmer Actor Jayne Atkinson Karen Hayes Actor Carlo Rota Morris O'Brian Actor Peter MacNicol Thomas Lennox Actor Regina King Sandra Palmer Actor Eric Balfour Milo Pressman Actor Marisol Nichols Nadia Yassir Actor Powers Boothe Vice President Noah Daniels Guest Star Adoni Maropis Abu Fayed Guest Star Ricky Schroder Mike Doyle Guest Star Kim Raver Audrey Raines Guest Star Tzi Ma Cheng Zhi Guest Star Kari Matchett Lisa Miller Guest Star Jim Holmes Dr. Arthur Welton Guest Star Joel Surnow Executive Producer Robert Cochran Executive Producer Brian Grazer Executive Producer Howard Gordon Executive Producer Bryan Spicer Director Matt Michnovetz Writer Nicole Ranadive Writer