Actor Harley Bonner was cast as Imogen's twin brother Joshua. His casting was confirmed on 18 February. Bonner's mother, Carla, previously appeared in Neighbours as Stephanie Scully. Bonner explained that he received a call from his agent who told him about the role and asked him to audition for it. Bonner admitted to being hesitant about auditioning, as he was aware that it might look like he was following in his mother's footsteps, while he wanted to be seen as his own person. His agent convinced him to pursue the role and he was then shortlisted for the part. Bonner acted out a scene with the casting director, but did not think he had done a good enough job, until he was offered the role. Bonner said it had been a "smooth process", adding that he was "super excited" about being cast. He and the other actors began filming their first scenes two weeks after the family's casting announcement. Bonner made his first screen appearance as Josh on 20 May 2013.
