A teenager who was sentenced to life for the murder of Logan Mwangi was described as a "monster" in court who called punching children "orgasmic."
Craig Mulligan was just 13 years old when he took part in fatal assaults on defenceless Logan Mwangi and assisted John Cole, 40, in disposing of the youngster’s body in the River Ogmore, Bridgend.
Mulligan had been in and out of foster care for several years before his stepfather, Cole, was given custody of him.
After Logan was killed and Mulligan was put back in care a support worker heard him repeatedly singing: “I love kids. I f***ing love kids. I love to punch kids in the head. It’s orgasmic.”
People who saw Mulligan’s behaviour said they reported it to his social worker Debbie Williams but she denied this.
During the trial, an anonymity order was placed on Mulligan due to his age preventing the reporting of any detail that might identify him.
His counsel said Mulligan had been diagnosed with multiple neurodevelopmental disorders.
Following his conviction and imprisonment for murder and perverting the course of justice, the press successfully applied to have the restriction removed on grounds of public interest and open justice.
On Friday, all three defendants were given life sentences.
Mulligan was told he would serve a minimum of 15 years while Cole was given a minimum of 29 years and Mwangi's mother Angharad Williamson was given a minimum of 29 years.
With the anonymity order lifted, the full details of Mulligan's life that were shown in the trial can now be reported.
He had moved into the family home in Lower Llansantffraid, Sarn, only five days before the murder – a fact prosecutors said was “no coincidence”.
Watch: Logan Mwangi’s teen killer unmasked after sentencing
Cole had raised him since he was nine months old and Mulligan was said to have “idolised” him.
Cole had been in a relationship with Mulligan’s mother, later becoming her carer.
The three moved to Wales for a “new start” after repeated attempts by Mulligan’s mother to take her own life.
They later split but remained living in the same house with Mulligan, including while Cole began dating Williamson, who shortly afterwards became pregnant.
Mulligan was removed from his mother’s care after she violently assaulted him and he was taken into the care of Bridgend County Borough Council for six months.
Caroline Rees QC, prosecuting, said by this time Mulligan was already “a complex, troubled and violent boy”.
He was placed with foster families, one of which described how he made their lives a “living hell” for the several weeks he lived with them, and they became “terrified” of him.
They said he made repeated threats to kill them, injured their daughter and the foster mother and their dog.
Although he spoke fondly of his stepfather, stepmother and youngest sibling, the family said they noticed he would only refer to Logan as “the five-year-old”, and spoke of wanting to “kill the five-year-old”.
They said he had a “desire for violence”, and called him a “monster” in submissions to the court.
Cole and Williamson petitioned the family courts to have custody of Mulligan and on 26 July 2021 they won and he came to live with them.
Mulligan was large for his age and had an interest in mixed martial arts.
During one alleged incident in the home, Mulligan is said to have “sweeped” Logan’s legs from under him while at the same time using his hand to slam his head into the ground.
He had done so, according to Williamson, on the orders of Cole, who had just punched Logan, causing him to fall backwards onto the ground.
Just before 3am on Saturday, 31 July Mulligan was captured on CCTV cameras following Cole out of the flat and down to the river where they dumped Logan’s body.
He also joined in carrying out a visible, fake search for Logan as part of the family’s cover-up.
Mulligan was arrested at around 6.30pm on 1 August 2021 along with Williamson inside Cole’s property.