Fan Casting Aaron Brennan in Neighbours

At the time of his arrival, Aaron was much closer to his younger brother Tyler as they both liked to live in the moment, whereas Mark was a bit more sensible and OCD.[7] Wilson thought Aaron liked being the middle brother because he loves to be the centre of attention. The actor commented, "There's definitely no middle-child syndrome here! He's quick to mediate any arguments between the other two."[7] Wilson also said Aaron was opportunistic like Tyler, but he understood limitations like Mark.[7] McGregor opined Mark's younger siblings made him a stronger character, while Burns thought Aaron's arrival had changed the dynamic between Mark and Tyler