Troy Miller is a fictional character from the Australian soap opera Neighbours, played by Dieter Brummer. The actor relocated to Melbourne to film his scenes and his casting was announced in March 2011. He had a seven-week guest contract. Brummer revealed that his turn in Underbelly: A Tale of Two Cities caught the attention of the Neighbours producers and they later offered him the role of Troy. He also stated that the part made him enjoy acting again, after being away from the industry for several years. Brummer made his first screen appearance as Troy during the episode broadcast on 10 May. Before his arrival on screen, it was revealed Troy was Sonya Mitchell's (Eve Morey) ex-boyfriend and the biological father of Callum Jones (Morgan Baker). Troy is an ex-army officer and a complex character. He initially appears nice on the surface, but there is a dark side to him. Brummer revealed that Troy does not intentionally set out to stir up trouble, but aspects of his personality often cause problems. He later stated that Troy knows how to push people to his advantage. Troy comes to Erinsborough after being contacted by Toadfish Rebecchi (Ryan Moloney). He discovers Callum is his son and sets about getting to know him better. He also becomes keen to get back together with Sonya. Troy departed on 8 June 2011 after failing to convince Sonya to start a new life with him. In March 2012, it was announced that Brummer had reprised his role for six weeks. The actor revealed that it took twelve months to come up with the storyline and get him back. Troy purchases a house on Ramsay Street and Brummer stated that he just wants to be a part of Callum's life. Shortly after the character's come back, it was revealed that he was Jade Mitchell's (Gemma Pranita) abusive ex-boyfriend. In June 2012, a two-week-long storyline unfolded in which Troy took Callum, Sonya and Jade hostage, before being badly injured. The character died from a head injury on 3 July 2012, following a dramatic confrontation with his son.