The series regulars, who were shown during the opening credits, are listed below in the order in which they debuted during the show's four-year run.
Recurring characters • Lt. Danny Quon, played by
Mel Prestidge, was the Hawaiian Eye's main contact with the
Honolulu Police Department. • Moke, played by
Douglas Mossman, was the chief uniformed security officer for Hawaiian Eye. He went by several variant names in the first season before the writers finally settled on one. • Paul, played by
Andre Philippe, was the master of ceremonies at the Shell Bar in the Hawaiian Village Hotel. • Bert, played by Sam Rawlins, was the doorman at the Hawaiian Village Hotel. • Teo, played by several actors including Ralph Hanalei and Keone, was a uniformed security guard for the Hawaiian Eye agency. • Roy Hondine, played by Rush Williams, was a columnist for a major Honolulu newspaper. • Sunny Day, played by
Tina Cole, was a singer at the Shell Bar. The role was created after Connie Stevens temporarily left the series in the fourth season over a contract dispute. • Sgt. Alika, played by
Makee K. Blaisdell, was a detective for the
Hilo police force and appeared in several episodes that took place on the
big island of Hawaii. • Bubbles Smith, played by Karen Griffin, was a temporary girlfriend of Tom Lopaka in several second-season episodes.
Guest musical acts All of the Warner Bros. detective shows of this era featured a musical interlude, generally performed by a series regular. On occasion,
Hawaiian Eye had a guest act perform: • Sterling Mossman and his Barefoot Bar Gang: A real policeman by day, Sterling also performed nights at the Barefoot Bar, one of Honolulu's most popular tourist attractions from 1952–1969. •
Arthur Lyman and his exotic tropical sounds: In one episode, "An Echo of Honor," Connie Stevens sang a version of the title song accompanied by Lyman's group. ==Legacy==