Six men have been jailed for a total of more than 17 years for sexual offences involving a girl aged 13.
The judge said the six showed no consideration for the girl
They took part in sex acts with the girl on beaches, in a car and in a flat after they were introduced to her by Frederick Lawlor, from Abergele, Conwy.
Lawlor, 52, described as the teenager's "evil controller", and another man will be sentenced after psychiatric reports.
The six had treated the girl like a sex object without any thought for her, the judge at Mold Crown Court said.
The court heard the police investigation into the abuse is still going on, and the girl has told officers that she has sex with about 50 men in all, organised by Lawlor, who advertised in the magazine Loot.
He offered the schoolgirl whom he controlled and corrupted and the court heard the men were too weak, and lacked the moral fibre, to resist.
Videos of men taking part in sex acts with the girl at locations including Llanddulas and Pensarn beaches in north Wales were shown in court.
All six men, from north Wales and the Wirral, sentenced on Tuesday admitted offences including sexual activity with a child.
Richard White, 58, of Old Colwyn, was jailed for three years six months; Eric Craven, 47, from Penmaenmawr, for four years; Ronald Farrington, 45, from Birkenhead ,and James McCoy, of Abergele, both received three year terms; Ronald Roche, 49, of Abergele, was jailed for two years and three months, and David Forshaw, of Rhyl, for one year and nine months.
Five men were placed on the sex offenders' register for life while Roche was told to register for 10 years.
Judge Mervyn Hughes QC said that for more than a year, each of the six had systematically sexually abused the girl.
He was satisfied that each man knew the girl was indulging in sexual activity under the direction and control of Frederick Lawlor.
With the exception of Roche and McCoy, the men willingly took part in the making of indecent videos and DVDs showing sexual activity with a child, he said.
Frederick Lawlor will be sentenced later
"The damage which each of you have done to that girl may never be known until many years have passed.
"Each of you to a greater or lesser extent treated her as a sexual object without any consideration whatsoever for her feelings, or the consequences to her of your behaviour," the judge told the six men.
He ordered a psychiatric report on Lawlor and another man.
Lawlor admitted 18 charges including sexual activity with a child, causing a child to engage in sexual activity with another, and taking indecent photographs.
Judge Hughes said: "It is recognised by this court that abuse would not have been possible were it not for the contact of the defendant Frederick Lawlor."
Outside court, Det Insp Wayne Jones, who led the police inquiry, said: "They committed serious offences against a weak, vulnerable victim.
"They've all had an opportunity when they were first introduced to the victim to say no and to report the matter to the police but they decided not to.
"The overriding factor for all of them was their own sexual gratification."