James Sloyan

as Niles Brokaw

as Dr. Jetrel (1 episode)

as Henry Strauss (1 episode)

as Avery Baltus (4 episodes)

as Board Chairman Emmanuel 'Manny' Tubbs (1 episode)

as Barry Ulin (1 episode)

as Dr. Frank Nollette (1 episode)

as Dr. Mora (2 episodes)

as Superintendent Hazen (3 episodes)

as Dunne

as Paul Stevenson

as Jerry Rattinger (1 episode)

as Mr. Drishler (1 episode), as Harv (1 episode)

as Theodore Moody (1 episode)

as Frank Marley (1 episode)

as District Attorney (2 episodes)

as Admiral Alidar Jarok (2 episodes)

as Wardell

as Dr. Zach Emerson

as Dr. Lucas Forbes (1 episode), as Elliot Atkins (2 episodes)

as Harry (1 episode)