Adam Fitzgerald - Doug Harris

Doug Harris, played by Mahesh Jadu, made his first screen appearance on 9 March 2010. Doug is a doctor at Erinsborough hospital. Perth-born actor Jadu auditioned for the role of Doug after being contacted by casting director, Lou Mitchell. He initially signed a six month contract with Neighbours, with a view to an extension if the role proved popular with viewers. The character and casting was announced in February 2010 and a writer for TV Week said "Jadu is set to join the popular soap in a recurring guest role, playing hot new doctor Doug Harris. Insiders say that as well as butting heads with Dr Karl Kennedy, Doug will also enjoy a romance with a local lass". A TV Soap reporter also commented on the new doctor, saying "Dr Doug will find himself caught up in a new romance", but they did not name the female character involved. They also called him a "hot doc". Jadu stated that Doug may appear to be abrupt, but when he is under pressure, he does all he can to look after his patients. He described his character as "fiercely independent, showing no signs of truly settling down anytime soon". A writer from What's on TV called Doug "extremely good-looking and more than a little bit arrogant". Describing Doug's relationship with Karl Kennedy (Alan Fletcher), Jadu said "Dr Harris and Dr Kennedy are in a constant stand off, both in and out of work. While they're different people, they step on each other's toes professionally and encroach on each other's personal territory also. Jadu suspected that they both admire each other's talent.

After Karl Kennedy suffers a health scare he is treated by Doctor Harris. Karl clashes with Doug over his diagnosis and how long he is left waiting before receiving treatment. Karl later decides to get his job back at the hospital and Doug tells him that he is in charge, but will allow Karl to return. When Stephanie Scully (Carla Bonner) is brought to the hospital with stomach pains, Doug treats her and reassures her that her baby is fine before telling her that her baby is a boy. When Libby Kennedy (Kym Valentine) goes to drop off her son, Ben (Blake O'Leary), at dance class, Doug steals her parking place. Libby confronts him, but he tells her she waited too long. At Harold's Store, she steals a cupcake that he was going to buy and he later apologizes and asks her out for a drink. Libby is forced to cut their date short when she has to take Sonya Mitchell (Eve Morey) home. A couple of days later, Libby runs into Doug and Jodie Smith (Mary Annegeline) and believes they are out on a date. Libby later calls Doug and they arrange a date together. Doug and Libby agree to walk away from each other if they hear something they do not like. Their date goes well until it is interrupted by a call from Karl. Doug tells Libby that he has to go back to the hospital, but he hopes to continue their date another time. Libby goes to the hospital to drop off Karl's pager and she meets Doug. She takes him into a room and they start kissing, Karl then walks in on them and begins an argument with Doug. When someone steals a set of hospital records, Karl believes it is Donna Freedman (Margot Robbie) who took them. He asks Doug not to call the police, so he can have a chance to talk to Donna. Doug calls the police anyway and Donna is arrested. Libby then goes to the hospital and confronts him about his actions. After Libby finds out about Steph's baby secret, she and Doug go to Charlie's for dinner. They meet Lucas Fitzgerald (Scott Major) and Michael Williams (Sandy Winton) and they have drinks together. Lucas asks Doug to tell them some stories from the hospital, but Doug refuses and Libby says that he could have saved her from being humiliated. Libby tells him to walk out the door as she does not want him back and Doug tells her that he is done. Jodie later tells Steph that Doug has gone on leave from the hospital. Following Paul Robinson's (Stefan Dennis) fall from the Lassiters Mezzanine, Doug begins treating him. He tells Rebecca that he will have place Paul into a coma to stop his condition from deteriorating. Paul later wakes up, but Doug is not happy when Mark Brennan (Scott McGregor) comes to question him. Doug is one of the doctors who treat Steph and Ringo Brown (Sam Clark) following a road side accident. He breaks the news to Donna that Ringo has died. Libby takes Steph to see Doug and get treatment for her depression. Doug talks to Libby and tells her that he admires her for helping out Steph. Toadfish Rebecchi (Ryan Moloney) calls Doug to attend Steph's culpable driving trial and give evidence. Samantha Fitzgerald (Simone Buchanan) cross examines him and brings up his relationship with Libby. Doug treats Andrew Robinson (Jordan Smith) when he is brought in following a fire at Number 26. Natasha Williams (Valentina Novakovic) comes to Doug a few weeks later and insists he takes some blood as she believes she is coming down with something.