Alfie Moon is a fictional character from the BBC soap opera EastEnders, played by Shane Richie. He made his first appearance on 21 November 2002, and left on 25 December 2005. He returned to EastEnders on 21 September 2010, following the return of on-screen wife Kat (Jessie Wallace) two episodes previously. Some of the character's more prominent storylines have included: his turbulent relationship with—and later marriage to—Kat Slater; the dementia and death of his grandmother, Nana (Hilda Braid); believing that Kat's son Tommy had died of cot death, whereas in truth their neighbour Ronnie Mitchell (Samantha Womack) had switched him with her own deceased child; discovering that Kat had been sleeping with Derek Branning (Jamie Foreman); beginning a relationship with Ronnie's sister Roxy (Rita Simons) and marrying her, but reuniting with Kat moments after the wedding; Kat's pregnancy with twins—Bert and Ernie, destroying their home by committing arson to get the insurance money; winning the lottery; being diagnosed with a brain tumour; and reuniting with Kat until they split again when she discovers that he is the father of Cherry Slater. Richie and Wallace departed on-screen on 22 May 2015 before returning for a short stint from 26 December 2015 to 25 January 2016, before appearing in the six-part drama spin-off series, Kat & Alfie: Redwater, airing from 14 May 2017 until 18 June 2017. In March 2018, it was announced that Alfie would return to the show. He appeared on-screen on 24 and 25 May 2018 and returned again on 15 November 2018 and from 30 November 2018 to 22 January 2019.