High Quality Content by WIKIPEDIA articles! Roxanne Lizette "Roxy" Mitchell (previously Slater) is a fictional character from the BBC soap opera EastEnders, portrayed by Rita Simons. Roxy arrived in Walford with her sister Ronnie (played by Samantha Womack) on 24 July 2007 and decided to move permanently to Walford from Ibiza where they ran a bar together. Roxy is the younger of the two sisters. She is described as the fire, as opposed to Ronnie`s ice.