The oldest ghost will be an Australian Aboriginal. He will be more like Sass than Thor or Robin probably out of fear that he would come across as a racist stereotype of a primitive tribesman.
One of the ghosts was killed by one of Australia's deadly animals.
There will be an episode where Kate (Australia's Sam & Alison) will come across the ghost of Harold Holt (He was an Australian Prime Minister who disappeared while swimming), presumably while swimming herself.
One of the main ghosts will be a penal convict.
Jenny Tian will guest star in an episode (or alternatively she could be in the main cast as a ghost).
Rose McIver will guest star as a guest visiting the mansion, and she will speak with her regular New Zealand accent.
Kate will be the person of color who sees ghosts while her husband is white.
One of the ghosts will be based on Steve Irwin.
Australia's Pete/Pat will have a boomerang stuck to his neck instead of an arrow.
The Australian Aboriginal instead of being struck by lightning like Thor & Robin, he instead will be killed in a bush fire or killed by an animal or fall of a cliff.
