Weeks after leaving a man for dead in bushland, Wade Armstrong Flux tortured a tied-up teenager with a frying pan, gel blaster and tomahawk.
Flux, 49, was described as a dangerously, irrationally violent man when he faced 20 charges in the Brisbane Supreme Court involving two "deplorable" incidents.
In June 2019, he was drinking and taking drugs with a man he had known for years in Brisbane's north when he became violent.
A third person struck the man in the back of the head with a heavy object, knocking him unconscious after Flux had landed several punches.
They drove the man out to bushland in Morayfield and left him in his van.
He was discovered two days later by a passer-by.
The man was diagnosed with spine, nose and rib fractures and severe brain damage.
He now endures a speech impediment, memory loss, an inability to process new information and can no longer work.
In his victim impact statement the man said he was haunted by Flux "leaving him for dead" and had lost the will to live.
Flux told police months later that he had given the man "a belting which he deserved" and once he got out of jail he would "bash" him again.
He told officers that he was not the one who had delivered the blow to the head but if he had, the man would be dead.
However, Flux was heard telling his wife on the prison telephone system that he had checked on the man in his van each day, giving him water.
Flux also faced a string of charges for another "extraordinarily serious" incident.
In July 2019, Flux went to a Bellmere residence to help someone recover property from a teenager and became violent when told it had been sold.
Flux tied up the 18-year-old and drove him to his home, accusing him of stealing.
After the teenager tried to escape, Flux bound him to a chair and hit his head with a frying pan before cooking a steak in it.
Flux then placed the teen's hand on a wooden stump and threw a tomahawk at it three times, narrowly missing fingers.
A gel blaster was later fired at the teen's face, chest and neck "too many times to count" from close range by Flux.
By the time he finished eating his steak police arrived but they left after the terrified teen didn't say anything to officers who were told everything had been resolved.
The teen was eventually allowed to leave after Flux threatened further violence but he later went to police.
"My client was a heavy user of drugs at the time and when he is doing that he's got a hair trigger for violence," defence barrister Adrian Braithwaite said.
Flux pleaded guilty to a string of charges including grievous bodily harm, four counts of common assault and two of assault occasioning bodily harm while armed.
Justice Soraya Ryan sentenced Flux to nine years in prison.
With time already served he is eligible for parole in October 2023.