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 Kevin Weisman Marshall Flinkman Actor Greg Grunberg Eric Weiss Actor Mía Maestro Nadia Santos Actor Lena Olin Irina Derevko, Laura Bristow Guest Star Sônia Braga Elena Derevko Guest Star Angela Bassett Hayden Chase Guest Star Andrew Divoff Lucien Nisard Guest Star Alex Wexo US Marshall Guest Star Kevin Carvell CIA , APO Agent Guest Star Traycee King Dancer Guest Star Theron Zahn Newsman Guest Star J.J. Abrams Executive Producer John Eisendrath Executive Producer Ken Olin Executive Producer Lawrence Trilling Director Monica Owusu-Breen Writer Alison Schapker Writer