John Reese
Detective Lionel Fusco
The Machine / Samantha Groves
Sameen Shaw
Harold Finch / Mr. Barnett / Emile Bertrand
Senator Ross Garrison
Nathan Ingram
John Greer
Travers
S.A. Martin LeRoux
Detective Bill Szymanski
Zachary (as Robert Manning Jr.)
Michael Cole
Henry L. Peck
Barnett
Emile Bertrand
McManus
Sgt. Neal
Patrol Uni
Desk Guard
Guard
Samaritan Op
Woman
Security Agent
Valet (as Tristao Darius Azor)
Officer Patrick Simmons (archive footage) (uncredited)
Alicia Corwin (archive footage) (uncredited)
Jessica Arndt (archive footage) (uncredited)
Denton Weeks (archive footage) (uncredited)
McNally (Army Enemy Intelligence Analyst) (uncredited)