Kiefer Sutherland Jack Bauer Actor Kim Raver Audrey Raines Actor Mary Lynn Rajskub Chloe O'Brian Actor Gregory Itzin Charles Logan Actor James Morrison Bill Buchanan Actor Jean Smart Martha Logan Actor Jude Ciccolella Mike Novick Guest Star Julian Sands Vladimir Bierko Guest Star Jayne Atkinson Karen Hayes Guest Star Paul McCrane Graem Bauer Guest Star Glenn Morshower Aaron Pierce Guest Star Carlo Rota Morris O'Brian Guest Star Tom Wright Admiral Kirkland Guest Star Ravil Isyanov Bierko's Technician Guest Star Jeremy Ray Valdez Tim Rooney Guest Star Peter Weller Christopher Henderson Guest Star Kate Rene Gleason DHS Staffer Guest Star Joel Surnow Executive Producer Robert Cochran Executive Producer Brian Grazer Executive Producer Howard Gordon Executive Producer, Writer Jon Cassar Director Evan Katz Writer