Magistrate Johanna Metcalf made the comments as she refused Jack Gibson-Burrell's application for bail on Wednesday, saying he was an unacceptable risk of reoffending.
The 21-year-old stared ahead as he learnt of the decision, while co-accused Matthew Raoul White, 39, let out a sigh of relief as he was granted bail.
It's alleged Gibson-Burrell has been breaking into Victorian train stations, abseiling off buildings and scaling heritage-listed sites to spray-paint the cartoon-like "Pam the Bird".
The murals have garnered an Instagram following of more than 70,000 people, with police enlisting the US Federal Bureau of Investigation to prove Gibson-Burrell is also the one behind the account.
The magistrate said Gibson-Burrell would likely commit further offences while on bail to boost the Instagram following.
"There is a risk of continued and escalated 'Pam the Bird' exploits to maintain the profile and notoriety of the graffiti," she said.
Jack Gibson-Burrell allegedly abseiled down to spray-paint Pam the Bird and the words "my clock". (HANDOUT/METRO)
It's alleged Gibson-Burrell and co-accused White trespassed into Flinders Street Station on July 10, 2024, to paint the bird.
The pair allegedly climbed an internal ladder network before Gibson-Burrell abseiled from a balcony onto the clock tower and spray-painted Pam the Bird and the words "my clock".
Gibson-Burrell also allegedly graffitied Footscray's heritage-listed Uncle Toby's factory in June, Channel Nine's Melbourne headquarters in September and the "Cheese Stick" column on CityLink road in October.
The Clifton Hill shot tower was also allegedly targeted that month, while police say a Santa suit-clad Gibson-Burrell painted a bird on the side of a train after thrown debris forced it to brake between Spotswood and Yarraville stations.
The Clifton Hill shot tower was among structures allegedly targeted in October. (Diego Fedele/AAP PHOTOS)
Police estimate the damage bill for Gibson-Burrell's alleged vandalism is more than $100,000.
Gibson-Burrell is further accused of punching a worker in the face at Emporium Melbourne, stealing multiple cars in Torquay and ramraiding a Nandos store in Footscray.
He is also a suspect in an alleged violent stabbing, although he has not been charged over the incident, Senior Constable Nicholls previously told the court.
The officer said Gibson-Burrell was a notorious vandal who would continue to cause "chaos" if released on bail.
"The totality of the offending shows a disregard for the law," the magistrate said. (Diego Fedele/AAP PHOTOS)
But defence barrister Jonathan Miller said the case was circumstantial and his client was planning to fight the charges, meaning there would be delays.
Ms Metcalf accepted there could be delays but she found his time on remand would not necessarily exceed a sentence if found guilty.
She also determined Gibson-Burrell was at risk of endangering himself or other members of the community if released on bail.
"The totality of the offending shows a disregard for the law," the magistrate said.
Ms Metcalf also noted Gibson-Burrell had been on bail while allegedly carrying out some of the offences and strict bail conditions would not reduce his risk.
A female associate covered Matthew White's face with a jacket as he left court. (Diego Fedele/AAP PHOTOS)
White, who is accused of spray-painting graffiti and photographing Gibson-Burrell during some of the "Pam the Bird" offending, looked relieved as he learnt he would be released.
Ms Metcalf found there were compelling reasons to bail him and strict conditions including a curfew could reduce the risk to the community.
White ignored questions from reporters as he left Melbourne Magistrates Court and a female associate covered his face with a jacket.
Gibson-Burrell and White are due back in court in June.
