Hawaii Five-0 — Characters & Cast

Finding the truth behind his family’s fractured history; evolving into safeguarding his adoptive team and the island community.

Begins as a hyper-focused, emotionally guarded Navy SEAL driven by a single-minded quest for vengeance regarding his father's murder. Across a decade of physical trauma, losing comrades, and discovering his mother’s espionage secrets, he evolves into a protective patriarch who learns to accept his emotional limits, ultimately stepping away from active command to find inner peace.

Being an attentive, loving father to Grace and Charlie; keeping Steve grounded and alive.

Starts as an anxious, cynical New Jersey detective who hates island life, having relocated solely for joint custody of his daughter Grace. Over time, he embraces Hawaii as his home, becomes Steve’s closest confidant and life-saver (donating part of his liver), and grows into an emotional pillar of Five-0.

Restoring his family name and upholding ethical honor in law enforcement.

Introduced as a disgraced former HPD detective who took the fall for internal corruption to protect his family. Through Five-0, he reclaims his professional honor, endures the tragic loss of his wife Malia, acts as a guardian to orphaned niece Sara, and departs to lead his own federal task force in San Francisco.

Proving herself worthy beyond her past and fighting for exploited victims.

Transitions from a promising pro surfer sidelined by injury into a recruit, gradually becoming a tough undercover operative. She navigates dangerous criminal connections through her marriage to Adam Noshimuri, eventually leaving Five-0 to spearhead a nationwide anti-human-trafficking federal task force.

Protecting his family from his past Chicago baggage and ensuring constitutional restraint in policing.

Initially an adversarial HPD SWAT Commander clashing with Steve’s cowboy tactics, Grover develops deep respect for Five-0, formally joins the team, and serves as McGarrett’s voice of practical wisdom and experienced authority.