The four young men surrounded her, touching her body, until Mead said "nah she's mine", the judge said.
CCTV stills handed to the judge by Rotorua Crown solicitor Fletcher Pilditch showed Mead "pushing and pulling" the victim to a secluded bush area near the Miro St entrance, the judge said.
Judge McGuire said Mead had sexual intercourse with the girl then violated her with his fist, saying "this is how we do it Mongrel styles". He then stole her bag and fled, leaving the girl injured and bleeding profusely.
"You [were] using this victim like a piece of meat... not acknowledging the fact she was even worth the dignity of a fellow human being," the judge told Mead.
The victim's mother read a victim impact statement to the court.
She said her daughter had become withdrawn and clingy and hadn't been able to talk about what happened.
"She's never been the same since what happened to her. Everything has changed," she said.
"I will never forget the look in her eyes when she said what he had done to her."
Mr Pilditch said the victim had only "acquiesced" to intercourse with Mead as she feared she would otherwise be subjected to a group rape.
He said the girl had been "callously degraded" and appeared to be suffering from post-traumatic stress disorder.
It was notable from the CCTV stills that Mead and his associates were all wearing Mongrel Mob colours.
The judge said Mead had admitted prospecting for the gang, but claimed to have given it up since becoming a father.
"That [offence] is the sort of ghastly, awful thing that you learn from the Mongrel Mob. Mongrel styles has got you standing in the dock and looking at a long stretch of jail."
