Nikolas Evans, who describes himself as homeless and mentally ill, has wreaked havoc on the organization that offers free, live music in the park every summer, causing an estimated $15,000 of damage.

The latest edition of South Park is set to premiere on Wednesday on Comedy Central, and the 27th season of the show is expected to be just as funny as ever.

A ban was imposed after last year's grand final weekend coincided with increased crime and antisocial behaviour.