Noel Devlin

First Appearance: Episode 85
Last Appearance: Episode 102

Key Storylines:
Noel Devlin turns up at Susan's apartment, claiming to be the ex-cellmate of her husband, Bill. When he discovers that the Palmers have over $7,000 in the bank, he cons David into writing a cheque for just $300 which is supposedly to protect Bill from being bashed. In the process, though, he obtains David's signature and, by forging it, is able to withdraw the $7,000 from the Palmer account, before then disappearing.

Nikos Dimitriou

First Appearance: Episode 576
Last Appearance: Episode 588

Key Storylines:
Helena Matsoukis's Greek fiancé, who follows her to Australia after learning that she no longer wishes to marry him and has found an Australian man - Andy Green - instead. Despite his hurt at being dumped by Helena, he stands by her and when things with Andy go wrong, he heads back to Greece with her to help her face her parents.

Margaret Dunne

First Appearance: Episode 181
Last Appearance: Episode 422

Key Storylines:
Patricia's sister had an affair with Martin Healy in the early-1960s at the same time as he was seeing Patricia - although Patricia didn't know this. After Patricia suffers a breakdown in early-1983, John tracks Margaret down to see if she can help her sister. Margaret is initially wary, and doesn't want to know. However, a few weeks later, she loses the house she's living in, following the death of her and Patricia's Aunt Mary, and she decides that Patricia owes her for ignoring her for the last 21 years. She quickly discovers that Patricia is seeing Martin again, and determines to put a spoke in the works - which she does successfully. Martin ends up committing suicide, but Margaret inadvertently frames David Palmer for his death, having intended to frame Patricia. Margaret flees to Perth, but is caught by the police and jailed in Melbourne for six months.

While she's in jail, she inherits a fortune in Dee Morrell's will. When she's released, she is still bitter towards Patricia and vows to destroy her, but when the two of them are caught in a bushfire at Woombai, and Patricia falls off her horse, Margaret realises that she can't leave her. The two of them become reconciled. Meanwhile, Margaret begins to fall in love with David while nursing him after he's shot by Joe Parker. David eventually splits from Beryl and he and Margaret move in together. However, the two of them are then involved in a 'plane crash, and although David escapes unscathed, Margaret suffers serious burns after a petrol can explodes. While she's recovering in hospital, David asks her to marry him, and she says 'yes'. Sadly, while she's having an operation on her burns, her heart gives out as the result of a murmur that she's already been warned about, and she dies. Her last wish - which she puts in a letter - is for David to look after Patricia.