Nick Sullivan - Allan Steiger

Senior Sergeant Allan Steiger, played by Joe Clements, made his first on-screen appearance on 4 March 2004. Allan is the father of Pepper Steiger.

Stuart Parker (Blair McDonough) clashes with Allan, shortly after he joins the police force training team. Allan feels that Stuart is not taking the job seriously and he looks in his file and sees that Stuart has trouble sticking with a job. When Stuart fails an exercise, Allan tells him to buck up his ideas if he wants to join the force. Stuart snaps and knocks Allan to the ground. Allan later tells him that if he returns the next day, then they can forget that ever happened. Allan begins self-defence classes for the Erinsborough women and Lyn Scully (Janet Andrewartha), Susan Kennedy (Jackie Woodburne) and Liljana Bishop (Marcella Russo) sign up. Liljana enjoys Allan's attention and she wears a skimpy outfit to the classes. Allan likes Liljana and believes she is interested in him, but she turns down his offer to go to the coast. Allan is promoted to Senior Sergeant and his first investigation is the Lassiter's complex fire and the murder of Gus Cleary (Ben Barrack). Allan offers Stuart a desk job when his sight is damaged in the fire. Allan investigates numerous crimes in the area, including David Bishop's (Kevin Harrington) being framed for fraud. He helps Stuart and allows him to take some time off when his wife is taken to a mental hospital.

Allan sends Stuart undercover at a prison to help out Dylan (Damien Bodie) and Stingray Timmins (Ben Nicholas) and later tries to arrest their father at his wedding to Janelle Timmins (Nell Feeney). When Paul Robinson (Stefan Dennis) is targeted by a stalker, Allan leads the investigation. Robert Robinson (Adam Hunter) is discovered to be the stalker and Paul arranges a fake wedding with Gail Robinson (Fiona Corke), with Allan waiting in the crowd. Robert shoots Paul and is arrested. Allan's daughter, Pepper (Nicky Whelan) moves into Ramsay Street and Allan is surprised when she tells him that she is engaged to Frazer Yeats (Ben Lawson). Allan and Pepper rescue Janae Timmins (Eliza Taylor-Cotter) from Rex Colt (David Serafin), who had locked her in his office. Pepper decides to reunite her parents and Allan is also keen to get back with his ex-wife, Christine Rodd (Trudy Hellier). Christine tells Allan and Pepper that she is a lesbian and while Pepper takes the news badly, Allan goes to the Scarlet Bar to play darts. He meets Janelle and she later asks him on a date.

Janelle and Allan decide to go shoot pigs and go camping. During the trip Allan arrests Katya Kinski (Dichen Lachman), which disgusts Janelle. She tries to leave, but changes her mind and she and Allan begin a relationship. Stingray dies and Dylan leaves town, which devastates Janelle. Allan helps her through her grief and she later asks him to move in with her. Pepper tells her father that she is being stalked and she reveals to him that she fell pregnant to her high school boyfriend and later suffered a miscarriage. Allan arrests Kevin Casey (Zen Ledden), but later discovers that his mother is stalking Pepper. Allan accepts a job in the Solomon Islands and tells Janelle that when he returns he will propose. Allan contracts malaria and he returns home. Allan suggests that the Timmins family move up north to allow Janelle to be closer to Dylan and Anne Baxter (Tessa James). Allan proposes to Janelle and they get married at their farewell party. The family then leave in a helicopter.