Following the conversion of Shortland Street clinic into a public hospital in early 2001 at the hands of
Chris Warner (
Michael Galvin), several new nurses were hired including Toni Thompson. Toni quickly made her mark on the social scene at the hospital, forming a tight bond with
Donna Heka (
Stephanie Tauevihi). After a series of one-night stands, she started a relationship with
Matt McCallister (Roy Snow) but quickly moved on with
Adam Heywood (Leighton Cardno). When Adam left her, Toni rebounded to a purely sexual partnership with senior surgeon Chris Warner. She fell pregnant and was unsure whether the baby was Chris' or Adam's but following the birth in May 2002 of
Harry (Joshua Thompson), Chris proved to be the father. Toni continued an on-off relationship with Adam which looked to be long-term when she nursed him following a stabbing. However the following year Toni realised she still loved Matt and the two eloped. Chris' mother
Margot Warner (Dinah Priestley) returned to Ferndale and believed that Toni was the result of an affair Chris' father had, meaning Toni and Chris' previous relationship was deemed possibly
incestuous. This was dispelled but Toni's brother
Dominic (
Shane Cortese) developed a deep jealousy of Chris as a result that bordered on obsession. Toni divorced a cheating Matt and got back with Adam, only for him to leave her later that year. She briefly dated
Logan (Peter Muller) but he proved psychotic and kidnapped Harry. Visiting Fiji on a work placement, Toni and Chris decided to do what was best for their son and start a relationship. Shortly after, Dom died while trying to murder Chris, resulting in the two getting engaged and Toni falling pregnant. Toni and Chris married in 2005 but Toni fell down some stairs and miscarried. The stress lead the two to separate and Chris moved on to
Greta Saunders (Meryl Maine). When Toni and Chris reunited, a vindictive Greta attempted to poison Toni and nearly succeeded in murdering her. In 2007 Toni discovered Chris had cheated on her multiple times and rediscovered the party lifestyle with Chris' brother
Guy (
Craig Parker). The two decided to leave Ferndale and they fled with Harry (Henry Williams) and Guy's daughter
Tuesday (
Olivia Tennet). Chris tracked them down 6 months later, but in the resulting escape Toni and Guy got into a serious car crash. Toni survived but lost a kidney and returned to work at Shortland Street. Nursing Guy through his drug addiction, the relationship ended when Toni and Chris decided to try again for the sake of Harry. Shortly after reconciling with Chris, Toni fell sick and suddenly died. The post mortem revealed that Toni had succumbed to
norovirus. Toni's best friend
Sarah Potts (Amanda Billing) later discovered the pills she had been taking for her kidney were faulty and had contributed to her death. In December 2020 Chris hallucinated Toni whilst grieving for his son
Phoenix (Geordie Holibar). Chris later dreamt of his and Toni's trip to Fiji when undergoing surgery. ==Character development==