Alfie Moon
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.
Kat Slater
Kathleen "Kat" Moon (also Slater) is a fictional character from the BBC soap opera "EastEnders", played by Jessie Wallace. She is also played by Kate Peck in a flashback in 2001 and Sumar-Elise Sandford in a flashback in 2018. Kat is the second eldest Slater family sister and first appears on 18 September 2000. Kat is described as "a bit of a floozy", "a bitch" and "very lazy". The "EastEnders" website says that as soon as Kat arrived in Walford with her "fake tan, heavy make-up and hoop earrings", viewers would know that Kat would bring a dose of "Viagra to the men of Albert Square". Wallace did not appear in the show between November 2004 and May 2005 following a period of maternity leave, and Kat later left the soap on 25 December 2005. Wallace reprised the role in 2010 and Kat returned on 17 September. She took leave from the soap again between January and June 2012. The character departed the soap again in May 2015, returning briefly between December 2015 and January 2016. Wallace reprises her role as Kat in the six-part spin-off series "" in 2017. Following the confirmation that "Kat & Alfie: Redwater" would not return for a second series, it was announced that Kat would return to "EastEnders"; she returned on 22 March 2018.