Marshall Thompson (40)

Dr. Marsh Tracy

Hari Rhodes (33)

Mike Makula

Yale Summers (32)

Jack Dane

Ross Hagen (27)

Bart Jason

Erin Moran (5)

Jenny Jones

Hedley Mattingly (50)

District Officer Hedley

Cheryl Miller (22)

Paula Tracy

Alan Napier (63)

Roger Ealing

John McLiam (47)

Sean Murphy

Rex Ingram (70)

Chief Makubu / Natoma

Michael St. Clair (43)

Garth

Harold Gould (42)

Dr. De Long

Linden Chiles (32)

Nicky Sebastian

John Cliff (47)

Kessler

Kenneth Tobey (48)

Col. Simon Tredwell

Louis Gossett Jr. (29)

Mkono

Gil Lamb (61)

Professor Walpole

Marian McCargo (33)

Dr. Teresa Warren

Peter Brocco (62)

Dr. Gene Barr

Raymond St. Jacques (35)

Emir of Asambana

Troy Melton (44)

Keith Randall (uncredited)

Joan Anderson (36)

June Pierce