|Portrayed by:||Peter Weller|
Curt Stoner is a robber and murderer responsible for targeting numerous HPD personnel.
Twenty years before the events in Hookman, Stoner was a robber who was involved in an armed robbery with John McGarrett, Ben Keoki and Troy Ookala being the HPD officers called out to defuse the situation but for some reason, Stoner got caught on the blasting caps.
John responded by shooting the caps which ultimately cost Stoner his hands and left him in agony.
Despite Stoner being arrested and convicted, his resentment and anger against the HPD officers did not go away as he spent the next few years planning to exact his revenge against those responsible.
After being released many years from prison later, Stoner later ended up living in a single apartment above a gun shop and spent most of his days craving the names of the officers who had arrested him into various bullets.
In February 2013, Stoner embarked on a campaign of revenge by personally targeting and shooting the officers responsible except for John McGarrett who was dead, John having been shot dead by assassin Victor Hesse on the orders of crime boss, Wo Fat.
As such, Stoner focused on John's son, Steve McGarrett, silently vowing that Steve would pay for the sins that his father had committed, namely John arresting Stoner and also John being the one responsible for Stoner losing his hands.
Stoner lured the Hawaii Five-0 Task Force composed of Steve, Steve McGarrett, Chin Ho Kelly and Kono Kalakaua to his apartment with the intention of killing Steve, only for Steve to successfully create a diversion which gave Kono just enough time to assemble her own rifle and shoot Stoner dead, finally ending Stoner's rampage for good.
- He was shot dead by Kono Kalakaua.