Tags: Soap Character.
Kathleen Kat Moon (née Slater) is a fictional character from the BBC soap opera EastEnders played by Jessie Wallace. She was also played by Kate Peck in a flashback in 2001. Kat is the daughter of Viv and Charlie Slater (Derek Martin) and arrived with her sisters Lynne Hobbs (Elaine Lordan) and Little Mo (Kacey Ainsworth).