Jennifer Garner Sydney Bristow Actor Victor Garber Jack Bristow Actor Ron Rifkin Arvin Sloane Actor Michael Vartan Michael Vaughn Actor Carl Lumbly Marcus Dixon Actor Lena Olin Irina Derevko, Laura Bristow Actor Kevin Weisman Marshall Flinkman Actor Bradley Cooper Will Tippin Actor David Anders Julian Sark Actor Merrin Dungey Francie Calfo Actor Greg Grunberg Eric Weiss Actor Patricia Wettig Dr. Judy Barnett Guest Star Isabella Rossellini Katya Derevko Guest Star Amanda Foreman Carrie Bowman Guest Star Kurt Fuller Robert Lindsey Guest Star Djimon Hounsou Kazari Bomani Guest Star Mía Maestro Nadia Santos Guest Star Elea Oberon Receptionist Guest Star Melissa George Lauren Reed Actor Kevin Sutherland Agent Blake Guest Star J.J. Abrams Executive Producer, Writer John Eisendrath Executive Producer Ken Olin Executive Producer, Director Monica Owusu-Breen Writer Josh Appelbaum Writer Jeff Pinkner Writer J.R. Orci Writer Jesse Alexander Writer Crystal Nix Hines Writer Laurence Andries Writer Roberto Orci Writer Jack Bender Director Alison Schapker Writer Andre Nemec Writer Max Mayer Director Lawrence Trilling Director Dan Attias Director Maryann Brandon Director