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Fay Brennan, played by
Zoe Bertram, made her first appearance on 28 July 2017. Bertram's casting was announced on 17 July. She previously appeared in the show as
Lorraine Dowski in 2011. Her introduction was revealed by Burns in May 2017. He commented that she would have a secret, while her arrival brings up issues from Tyler's past, resulting in "a big confrontation scene." Fay's introduction came about after the death of actor Russell Kiefel, who played the brothers' father
Russell Brennan. Kiefel was due to reprise his role, but his unexpected death led to a storyline change. Wilson explained that all three brothers have various issues with their mother and Aaron acts "very out of character" towards her. as her
Huntington's disease worsens and her daughter
Chloe Brennan (
April Rose Pengilly) wants her around. Pengilly said Chloe also wants to give her brothers a break. Bertram reprised the role for a final guest stint in February 2021. Fay's condition rapidly deteriorates while she is in Erinsborough and the character's death aired on 8 March 2021. Fay comes to Erinsborough to see her sons Mark, Aaron and Tyler. Mark is pleased to see her, but Aaron questions her sudden visit. Fay later talks with Tyler about her divorce from their father, Russell. She apologises for leaving him and his brothers with Russell and for the abuse Tyler suffered at his hands. She also admits that she should have come to see him after he told her about it two years ago. Tyler accepts her apology and they reconcile, but Aaron is still angry with Fay for leaving them. Russell attempts to call Fay, but she rejects his call. His former partner
Sheila Canning (
Colette Mann) later introduces herself to Fay and asks if she has heard from Russell lately. Aaron and Fay talk and he tells her that he wishes she could have been around while he was coming to terms with his sexuality. Fay explains that Russell has been calling her lately, while Mark tells her Russell sent Sheila an apology letter. Fay calls Russell back and he asks her to visit him in Port Lincoln. Aaron encourages her to go. Fay returns a couple of weeks later to inform the boys that Russell has had a heart attack and is in the hospital. As they plan to visit him, the hospital calls Fay and she informs her sons that Russell has died. Aaron's partner
David Tanaka (
Takaya Honda) contacts the hospital for more information and reveals that Russell's last words were
Memory Cove, a place the family used to visit. Fay tells her sons that she is going back to Port Lincoln, before explaining to Sheila that she had an affair in Memory Cove and fell pregnant. Sheila realises that one of Russell's sons was not his and Fay begs her to keep it a secret. She then leaves town without saying goodbye. Fay returns when Sheila tells Mark, Aaron and Tyler the truth. Fay reveals that she had the affair while she and Russell were going through a rough patch in their marriage, so she knew the baby was not Russell's. She then tells Tyler he is not Russell's son and that his father's name is
Hamish Roche (Sean Taylor). Fay apologises to Tyler, but he asks her to leave. At The Waterhole, Fay tells Sheila that without her, she might not have had the courage to tell Tyler the truth. Mark and Aaron tell her that it might take some time before Tyler can forgive her, and Fay returns to Adelaide. Fay later returns, at Mark's request. She sees
Louise McLeod (
Maria Theodorakis) at Erinsborough Hospital and recognises her as a nurse who cared for Russell in Port Lincoln. This leads Mark to deduce that Louise was in a relationship with Hamish and helped him murder Russell. Hamish is later killed, and while Tyler is awaiting trial for his murder, Fay claims she was the culprit, but her sons do not believe her confession. It is later revealed that she is innocent, as she spent the night of the murder with
Bill Warley (Darren Mort). Fay comes to Lassiters Hotel to visit her daughter
Chloe Brennan (
April Rose Pengilly), who has recently moved to Erinsborough. Fay walks in on Chloe kissing her boss
Leo Tanaka (
Tim Kano). Fay reveals that she has to sell her house, as she has been funding Chloe's lifestyle. Chloe vows to pay her mother back, while Fay says she will keep Chloe's relationship with Leo to herself. Fay and Sheila agree to look out for jobs for one another, but they fall out when Fay is offered Sheila's old job of managing The Waterhole. Chloe tells Fay that Sheila's son
Gary Canning (
Damien Richardson) is romantically interested in her, so she asks him out and he accepts. Following their date, Fay hears Gary telling Sheila that he is not interested in her. Sheila explains that she forced Gary into going on the date. When Fay hears that Tyler is struggling to cope in prison, she quits her job and returns to Adelaide. Fay returns to walk Aaron down the aisle during his wedding to David. Fays visits her children after Mark announces his engagement to
Elly Conway (
Jodi Anasta). She asks Chloe how she was able to pay her back in such large amounts, and Chloe explains that she went on dates with men in return for payment. She later tells Fay that she has Huntington's disease and that she suspects that Fay has it too. Fay admits that she has been having symptoms for a while and agrees to get tested. Fay's test comes back positive, and she decides to go to Bali to be with Tyler. Fay returns to Erinsborough for Mark and Elly's wedding, where Elly reveals that she cheated on Mark with Chloe. When Chloe continues to talk about Elly, Fay slaps her as she is angry with Chloe's selfishness towards Mark. Fay tries to help Mark and Elly reconcile and she apologises to Chloe for slapping her. Fay tries giving Piper an update about Tyler, but Piper struggles to hear how he has moved on with his life when she is treading water. Mark tells Fay that Elly is pregnant and she encourages him to forgive Elly, before she returns to Adelaide. A few months later, Tyler calls his siblings to tell them Fay has gone missing. She soon turns up in Erinsborough and explains that she heard from Chloe that Mark was going through a hard time. Mark, Aaron and Chloe realise that Fay's Huntington's Disease is worse, and David later tells them that Fay's condition has progressed significantly. He suggests that she will need 24-hour supervision. The family go to Adelaide to come up with a plan for Fay, and Mark decides to move there to help Tyler and Piper take care of her. Months later, Mark calls Chloe to let her know that Fay almost choked on some food and needs to have a
PEG tube fitted. Chloe goes to Adelaide to see her and, after talking it over with her husband
Pierce Greyson (
Tim Robards), invites Fay to stay with them for a while to give Mark and Tyler a break. Chloe and Pierce make the house more accessible, as Fay now uses a wheelchair, and they hire
Nicolette Stone (Charlotte Chimes) to be her live-in nurse. Fay becomes fond of Nicolette, unaware of her ongoing feud with Pierce and her romantic feelings for Chloe. She is delighted when Chloe announces that she is pregnant. Pierce arranges for Fay to go on holiday with Aaron and David, and when she returns, she learns that Nicolette has got a new job. Fay arranges a baby shower for Chloe but she breaks down and reveals she has miscarried the baby. Fay decides to return to Adelaide; before she goes, she discovers that Nicolette has been causing a rift in Chloe and Pierce's marriage and urges her to stay away. In the months that follow, Chloe separates from Pierce after Nicolette exposes his infidelity with
Dipi Rebecchi (Sharon Johal). Chloe ends her friendship with Nicolette over her role in exposing Pierce's affair, but things are complicated when Nicolette becomes a surrogate for Aaron and David. When Fay visits Erinsborough, she mistakes the tension between Chloe and Nicolette for attraction, and continues to bond with Nicolette over her future grandchild. Aware of Nicolette's manipulative past,
Toadie Rebecchi (
Ryan Moloney) is suspicious when Fay changes her will to include Nicolette and raises it with the Brennans. Nicolette then confesses her past misdeeds, but Fay forgives her and insists she is part of their family. With her health deteriorating quickly, Fay pursues completing a bucket list, which includes trying Gary's famous chocolates one more time. She accidentally consumes a piece of chocolate which leads to an infection in her lungs. This becomes pneumonia and she is told she has days to live. She initially hides her diagnosis but confesses as her health worsens. She dies peacefully surrounded by Chloe, Aaron, David and Nicolette. Her body is flown to Adelaide for her funeral. ==Hamish Roche==