He had a penchant for gold chains and diamond-studded earrings and his hair was always gelled and spiked high in the front. He wore clean clothes, including ironed white shirts, to all of his court appearances.
Because of his age, the now-15-year-old's name and any other details identifying him were suppressed after he was arrested for murdering Scottish backpacker Karen Aim on January 17 in Taupo last year.
But following a guilty plea in the High Court at Auckland yesterday, it was revealed Broughton also bashed - and left for dead - a 17-year-old girl a week before the murder.
He admitted a murder charge and wounding with intent to cause grievous bodily harm and will be sentenced on both charges in the High Court at Rotorua on March 6.
Broughton was bought up by his religious grandparents, Monty and Moana, in the Nukuhau suburb of Taupo. A search warrant executed on the home, found pornographic magazines and videos under a bed in his bedroom.
Files retrieved from the memory stick in Ms Aim's camera - which police found underneath the house - show he had taken four photos of himself, wearing sunglasses and a diamond-looking earring, holding the camera closer to himself each time.
A cousin Broughton had talked to about the crime told police in a statement he had a page on the social networking site Bebo.
"I think he uses it to keep in touch with all his girlfriends. He's got millions, all on Bebo. I've never met any of them. They're all on Bebo.
"I've never actually seen him with a girl, but I think he's into girls. He's not really talkative about that stuff. In fact, he's not that talkative at all.
"He has a mean temper on him and he's quite big. He talks back to the adults like Nan and Koro. None of us do that. He thinks he's an adult.
"He talks to Aunty Jo like that, he snaps at her, especially her."
He usually wore a "big bling earring", the cousin said.
"He's had a round one and a square one. They're fake but they look like diamonds. He goes for the gangster look all the time and he's always doing his hair."
He said Broughton smoked marijuana and drank alcohol.
Whenever Ms Aim's name came on television, "Jahche would look over at me and go 'Oooh' when they came up with new evidence. I'd pull this expression on my face, 'They're going to catch you' and he would pull a face back", the cousin said.
Broughton appeared to have a tendency for making up stories. He told a friend a man called "Bryan", a Mongrel Mob prospect from Rotorua, had killed Ms Aim.
Asked what else Broughton had said about what "Bryan" had supposedly done, the witness said: "He hit her over the head with a baseball bat. He was planning on throwing her into the Waikato River but there was too much traffic around so he left."
Broughton's demeanour during a three-day depositions hearing last year was silent and impassive.
He was seen to wince once when the Taupo Youth Court heard about a rip in Ms Aim's underwear which left her genitals exposed and which a forensic expert said was new.
Other than that, the teenager looked directly at those in the witness stand and glanced occasionally at family in the back of the courtroom.
Broughton was arrested on the way to the Ratana Church headquarters near Wanganui with his grandparents and others on a bus.
His family are believed to be heavily involved with the Maori religion.
