The role of Martha was originally played by Burcin Kapkin upon her introduction in 1988. In 2005 the character returned to the show, played by the model Jodi Gordon. Gordon took acting lessons before successfully auditioning for the role. Gordon later revealed that she was initially nervous about auditioning due to her lack of acting experience. However, producers gave her two months prior to filming so she could learn her scripts and gain more acting skills. Gordon said, "I'd never done any acting. So I did a few little acting course things and then I kind of fluked the part".