Anna Torv Agent Olivia Dunham Actor Joshua Jackson Peter Bishop Actor John Noble Dr. Walter Bishop Actor Lance Reddick Agent Phillip Broyles Actor Blair Brown Nina Sharp Actor Jasika Nicole Astrid Farnsworth Actor Seth Gabel Lincoln Lee Actor Leonard Nimoy Dr. William Bell Guest Star Mike Cerveris The Observer Guest Star Rebecca Mader Jessica Holt Guest Star Gerard Plunkett Senator James Van Horn Guest Star Alistair Abell Chief Scientist Guest Star Liam Carter FBI Agent 2 Guest Star Babak Haleky Doctor Guest Star Heming Hopkins FBI Agent 3 Guest Star David Ingram Pilot Guest Star J.J. Abrams Executive Producer Alex Kurtzman Executive Producer Roberto Orci Executive Producer Jeff Pinkner Executive Producer Bryan Burk Executive Producer