Kathleen "Kat" Slater (also Moon) 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 appeared on 18 September 2000. Kat's usual dress is very short skirts and leopard-print tops, with much make-up and heavy fake tan. She would often go on all-night binges and has slept with many men, but calmed down in more recent years. As such, she can be described as a "tart with a heart" character. Her initial stint saw her involved in many storylines, most significantly in a plot twist which sees her sister Zoe (Michelle Ryan), revealed to be her daughter after she was raped by her uncle Harry (Michael Elphick) as a child. Another key aspect to the character's storylines is her marriage to Alfie Moon (Shane Richie), prior to which she became briefly engaged to Alfie's love rival Andy Hunter (Michael Higgs); after Kat jilted Andy on their wedding day, he blackmailed her into sleeping with him in his revenge bid against Alfie and Kat. Wallace has won multiple awards for her portrayal as Kat, who has become one of the show's best loved characters.