Scott Bakula Capt. Jonathan Archer Actor Connor Trinneer Cmdr. Charles "Trip" Tucker III Actor Jolene Blalock T'Pol Actor Dominic Keating Lt. Malcolm Reed Actor Anthony Montgomery Ensign Travis Mayweather Actor Linda Park Ensign Hoshi Sato Actor John Billingsley Dr. Phlox Actor Rick Worthy Jannar Guest Star Randy Oglesby Degra Guest Star Tucker Smallwood Xindi-Primate Councilor Guest Star Sean McGowan Cpl. Hawkins Guest Star Ruth Williamson Sphere-Builder Primary Guest Star Mary Mara Sphere-Builder Presage Guest Star Scott MacDonald Cmdr. Dolim Guest Star Josette DiCarlo Sphere-Builder Woman Guest Star Andrew Borba Xindi-Reptilian Lieutenant Guest Star Bruce Thomas Xindi-Reptilian Soldier Guest Star Eric Lemler Helm Crewman Guest Star Rick Berman Executive Producer Brannon Braga Executive Producer David Livingston Director Manny Coto Writer