Jennifer Garner Sydney Bristow Actor Michael Vartan Michael Vaughn Actor Bradley Cooper Will Tippin Actor Merrin Dungey Francie Calfo Guest Star Carl Lumbly Marcus Dixon Actor Ron Rifkin Arvin Sloane Actor Kevin Weisman Marshall Flinkman Actor Victor Garber Jack Bristow Actor Gina Torres Anna Espinosa Guest Star Elaine Kagan June Litvak Guest Star Peter Dennis Professor Bloom Guest Star Michael Halsey Professor Hoyt Guest Star Paul Anthony Scott FTL Guard Guest Star Keone Young Professor Choy Guest Star Jack Axelrod Giovanni Donato Guest Star Sam Ayers Man on Phone Guest Star Del Zamora Mechanic Guest Star Tobin Bell Karl Dreyer Guest Star Robert Clendenin Kostia Bergman Guest Star J.J. Abrams Executive Producer John Eisendrath Executive Producer Ken Olin Executive Producer Jeff Pinkner Writer Perry Lang Director