Bella Nixon is a fictional character from the Australian television soap opera Home and Away, played by Courtney Miller. The actress previously appeared in the serial as an extra. When the part of Bella came up, Miller felt a strong connection to the character and storyline. She was cast in June 2018 and Home and Away marks her first major television role. She made her first appearance during the episode broadcast on 26 November 2018. The character was introduced as the younger half-sister of Colby Thorne (Tim Franklin) and she received several on-screen mentions as part of his early storylines. Bella's fictional backstory establishes that she and her mother were taken away by her father Ross Nixon (Justin Rosniak) when she was young. Bella is portrayed as sheltered, but independent and feisty. Miller found herself being able to live out her rebellious side through her, and she uses her qualifications in psychology and rehabilitation counselling to help her portray Bella's feelings. Miller praised Bella's unglamorous and realistic style as a positive characteristic for young female viewers to see. When Colby and Bella are reunited, Bella protects herself with a crossbow and Franklin described her as "completely feral". Bella moves to Summer Bay with Colby, but Miller said she is greatly affected by Ross's crimes and lies. The character's early storylines dealt with Ross's return, as he kidnaps her and tries to get revenge on Colby, her fears that she is messing up Colby's life, and her rebellious behaviour, which results in a new living situation. The script writers used the character to highlight the growing issue of online predators targeting and grooming young Australians. Bella's predator, 25-year-old Tommy O'Reilly (Adam Sollis) attempts to sexually assault her when they meet, but is stopped by Irene Roberts (Lynne McGranger). Miller hoped the storyline would lead to more awareness of the issue. Towards the end of 2019, Bella starts feuding with Mackenzie Booth (Emily Weir), after she breaks up with Colby. Miller believed that Bella sees Mackenzie as a threat and wants to get revenge. She is also diagnosed with tetanus, and she uses her illness to manipulate Colby into spending all his time with her. Miller received a nomination for the Logie Award for Most Popular New Talent for her portrayal of Bella. The character's introduction was branded memorable by New Idea's Jackie Brygel, while her polarising behaviour led one critic from Inside Soap to call her "trouble with a capital 'T'". Miller received positive feedback from parents after the grooming storyline aired.