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 David Anders Julian Sark Actor Greg Grunberg Eric Weiss Actor Amanda Foreman Carrie Bowman Guest Star Kurt Fuller Robert Lindsey Guest Star Oleg Taktarov Gordei Volkov Guest Star Michael Berry Jr. Scott Kingsley Guest Star Elea Oberon Receptionist Guest Star Adam Alexi-Malle Bernard Guest Star Melissa George Lauren Reed Actor J.J. Abrams Executive Producer, Writer John Eisendrath Executive Producer Ken Olin Executive Producer, Director