Danny Williams (played by James MacArthur) is a protagonist in Hawaii Five-O.
Young state police officer on McGarrett's elite Five-O unit. Known for his mainland fashion sense and close working relationship with McGarrett, who frequently directs his signature catchphrase "Book 'em, Danno" toward him. His backstory was occasionally explored through family episodes. Chin Ho (played by Kam Fong) appears in Hawaii Five-O.
Veteran state police officer and core Five-O team member for the first ten seasons. He was ultimately killed off in the season finale of season 10 while working undercover to expose a Chinatown protection ring, fulfilling the actor's request to retire the character. Kono (played by Zulu) appears in Hawaii Five-O.
Streetwise state police officer who served as a regular member of McGarrett's Five-O team during the first four seasons before being replaced by Ben Kokua. Ben (played by Al Harrington) appears in Hawaii Five-O.
State police officer who joined McGarrett's Five-O team as a regular member, specifically replacing Kono starting in season five and serving through the later seasons. Che Fong (played by Harry Endo) appears in Hawaii Five-O.
Forensic specialist who periodically assists McGarrett's Five-O team with technical analysis and investigative support as part of the unit's auxiliary staff. Governor (played by Richard Denning) appears in Hawaii Five-O.
The state executive who appoints Steve McGarrett as detective captain, granting him the official authority to form and lead the fictional Five-O police unit. Duke (played by Herman Wedemeyer) appears in Hawaii Five-O.
Honolulu Police Department officer who joined McGarrett's Five-O team as a regular member alongside Ben Kokua and continued serving through the later seasons. Luana (played by Laura Sode-Matteson) appears in Hawaii Five-O.
Hawaii Five-O (1969) — Character Map & Story Timeline
Hawaii Five-O (1969) interactive character relationship network and AI-powered story timeline. Explore the connections, alliances, and conflicts between characters across the narrative arc.
AI Narrative Summary
The twelve-season narrative follows a state investigative unit from its original formation through personnel changes, international escalation, internal losses, and a final intelligence confrontation.
Character Network — 9 Characters
Danny Williams (James MacArthur) — protagonist Young state police officer on McGarrett's elite Five-O unit. Known for his mainland fashion sense and close working rela...
Chin Ho (Kam Fong) Veteran state police officer and core Five-O team member for the first ten seasons. He was ultimately killed off in the...
Kono (Zulu) Streetwise state police officer who served as a regular member of McGarrett's Five-O team during the first four seasons...
Ben (Al Harrington) State police officer who joined McGarrett's Five-O team as a regular member, specifically replacing Kono starting in sea...
Che Fong (Harry Endo) Forensic specialist who periodically assists McGarrett's Five-O team with technical analysis and investigative support a...
Governor (Richard Denning) The state executive who appoints Steve McGarrett as detective captain, granting him the official authority to form and l...
Duke (Herman Wedemeyer) Honolulu Police Department officer who joined McGarrett's Five-O team as a regular member alongside Ben Kokua and contin...
