High Quality Content by WIKIPEDIA articles! Alfred William "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 most prominent storylines have included: his turbulent relationship with – and later marriage to – Kat Slater; the dementia and death of his grandmother; believing that Kat`s son Tommy had died of cot death, whereas in fact Ronnie Branning had switched him with her own deceased child; and his wife`s affair with Derek Branning.