Cartoons showing sex acts involving children based on Simpsons characters are pornographic, a judge ruled.

In Australia’s New South Wales Supreme Court, Justice Michael Adams ruled that a fictional cartoon character was a “person,” reports the Herald Sun.

Last February, Alan John McEwan was convicted of possessing child pornography and using his computer to access child pornography.

“The alleged pornography comprised a series of cartoons depicting figures modelled on members of the television animated series The Simpsons,” the judge said.

The cartoons showed characters such as Bart, Lisa and Maggie Simpson having sex.

"In my view, the magistrate was correct in determining that, in respect of both the Commonwealth and the NSW offences, the word ‘person’ included fictional or imaginary characters," the judge said.

McEwan was convicted and fined $3,000 and placed on a good behaviour bond.