Main cast as Rick,
Tom Selleck as Magnum,
Roger E. Mosley as T.C., and
John Hillerman as Higgins •
Tom Selleck as
Thomas Magnum •
Roger E. Mosley as Theodore "T.C." Calvin •
Larry Manetti as Orville "Rick" Wright •
John Hillerman as
Jonathan Higgins Recurring characters • Lieutenant Yoshi Tanaka: A homicide-division police lieutenant with the
Honolulu police department (
Kwan Hi Lim), he has a slight
Lieutenant Columbo-like enigmatic quality, characterized by his casual dress and ironic sense of humor. He is also, like Magnum, a
Detroit Tigers fan. He appears in Seasons 2–8. • Agatha Chumley: Higgins's
stereotypically English lady friend (Gillian Dobb), who seems to have a crush on Higgins. Her first appearance was in the episode "Black on White". She appeared in Seasons 3–8. • Colonel "Buck" Greene: A Marine Corps aviator and intelligence officer (
Lance LeGault), who is often Magnum's nemesis in seasons 2–8. LeGault also played John W. Newton, aka "Delta One", in episode 9 of season 1, "Missing in Action". • Carol Baldwin: An assistant district attorney (
Patty McCormack in season 1, followed by
Kathleen Lloyd in seasons 3–8); before playing Carol Baldwin, Lloyd guest starred in the episode "Almost Home" (season 3, episode 11) as Bridget Archer. • Lieutenant "Mac" MacReynolds: A doughnut-munching
Office of Naval Intelligence (ONI) lieutenant (
Jeff MacKay), killed by a car bomb planted by "Ivan", a Russian KGB officer. Mac returns as a ghost for four episodes ("Mac's Back", "Limbo", "Infinity and Jelly Doughnuts" and "Pleasure Principle") and later as a lookalike character. In the pilot, MacKay portrayed "Ski", a guard at the entrance gate of Pearl Harbor. He appeared in Seasons 1–3 and 7–8. • Jim Bonnick: A con man and an ex-Navy pilot who was released on a medical discharge (
Jeff MacKay); he is Mac Reynolds's lookalike. In at least one episode ("Mac's Back"), MacKay appeared in both roles. He appeared in Seasons 5–8. • Francis "Icepick" Hofstetler: An American loan shark and major underworld figure from
Chicago, and a quasi-father figure to Rick Wright (Walter Chotzen and later
Elisha Cook Jr.). • Dr. Ibold, M.D. "Doc Ibold": A minor character (
Glenn Cannon) who appeared in episodes when the script called for a physician. First referred to as "Script Writer #1", he was known for prescribing opiates for any and all ailments. He appeared in Seasons 2–8. Cannon also played Dr. Bernard Kessler in Episode 1.7, "Never Again...Never Again". • Michelle Hue: The love of Magnum's life (
Marta DuBois); she and Magnum married in Vietnam but the devoutly Catholic Michelle had the marriage annulled after her first husband, a North Vietnamese general who was presumed dead, resurfaced. Magnum had believed that Michelle was killed during the
1975 evacuation of Saigon. She appeared in Seasons 2–8. • Lily Catherine Hue: Daughter to Magnum and Michelle Hue (Kristen Carreira). Michelle entrusts Lily to Magnum's care but doesn't reveal that she is his daughter. Although she was raised as the daughter of General Hue, Lily Catherine learned Magnum-related things from Michelle, such as "Detroit Tigers" and "Rick, T.C., Thomas". By "Resolutions" (May 1988), General Hue's enemies had killed Hue, Michelle, and Michelle's second husband, Edward Durant. Lily Catherine was presumed dead and was reunited with Magnum, who returned to his career as a Naval Intelligence officer to protect her. She appears in seasons 7–8. • Lieutenant (later Lieutenant Commander) Maggie Poole: The successor of the deceased Mac Reynolds (
Jean Bruce Scott), she dislikes her superior, Marine Corps Colonel Greene. She appeared in Seasons 3–8. • Luther H. Gillis: A mock
film noir St. Louis private eye with a Boston accent (
Eugene Roche), whose deception, dissembling, and disturbing capacity for violence Magnum almost always underestimates or overlooks. Gillis provided the narration in the five episodes in which he appeared in Seasons 4–8. • Lieutenant Nolan Page: A hard-nosed, no-nonsense Honolulu Police Department lieutenant with a
New York accent (
Joe Santos), he assists Magnum on several cases. He appeared in Seasons 7–8. • Moki: The bartender of the King Kamehameha Club in Season 1; later replaced by Keoki, he appeared in Seasons 1–2. • Keoki: The bartender/server of the King Kamehameha Club starting in season 2. He is arrested in season 4 by Lt. Tanaka for robbing the club in the episode "I Witness". He appeared in seasons 2–4. • Bryant Calvin, T.C.'s son in seasons 7 and 8, played by
Shavar Ross. ==Setting==