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 Justin Theroux Simon Walker Guest Star Djimon Hounsou Kazari Bomani Guest Star Clifton Collins Jr. Javier Perez Guest Star Virginia Pereira Receptionist Guest Star Garret Sato Yakuza Pit Bpss Guest Star J.J. Abrams Executive Producer John Eisendrath Executive Producer Ken Olin Executive Producer, Director Jesse Alexander Writer