Dexter "Dex" Walker is a fictional character from the Australian soap opera Home and Away, played by Charles Cottier. He made his first screen appearance during the episode broadcast on 30 July 2009. Tom Green originated the role, but when the Walker family returned in 2010, Cottier took over the part. Cottier quit the role in early 2013 and Dexter made his last appearance on 13 November 2013.

Marilyn Chambers is a fictional character from the Australian soap opera Home and Away, played by Emily Symons. She made her first screen appearance during the episode broadcast on 18 May 1989. When Symons auditioned for the role she created a backstory for the character and dressed in a mini dress, stilettos and put on a breathy voice. She was successful and producer Andrew Howie cast her in the role. Writers introduced her as the girlfriend of established character Lance Smart. Marilyn is characterised as a bubbly and ditsy hairdresser. She has a distinct bouffant hairstyle and unique dress sense which includes high heel shoes. Marilyn has become one of the show's most iconic characters during her tenure.