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 Roger Cross Curtis Manning Guest Star Michael Angarano Scott Wallace Guest Star Megan Gallagher Jillian Wallace Guest Star Tzi Ma Cheng Zhi Guest Star Adoni Maropis Abu Fayed Guest Star Kal Penn Ahmed Amar Guest Star Raphael Sbarge Ray Wallace Guest Star Joel Surnow Executive Producer Robert Cochran Executive Producer Brian Grazer Executive Producer Howard Gordon Executive Producer, Writer Jon Cassar Director