David Duchovny FBI Special Agent Fox Mulder Actor Gillian Anderson FBI Special Agent Dana Scully Actor Charles Nelson Reilly Jose Chung Guest Star William Lucking Roky Crikenson Guest Star Jason Gaffney Harold Lamb Guest Star Sarah Sawatsky Chrissy Giorgio Guest Star Larry Musser Detective Manners Guest Star Alex Trebek Man in Black 2 Guest Star Alex Diakun Dr. Fingers Guest Star Terry Arrowsmith Major Robert Charles Vallee Guest Star Andrew Turner CIA Man Guest Star Mina E. Mina Dr. Hand Guest Star Allan Zinyk Blaine Faulkner Guest Star Michael Dobson Sargeant Hynek Guest Star Jaap Broeker Yappi Guest Star Chris Carter Executive Producer Darin Morgan Writer Rob Bowman Director