Libby Fox is a fictional character from the BBC soap opera EastEnders, played by Belinda Owusu. She made her first appearance on 22 May 2006 and left in 2010. She is the daughter of Denise Fox and Owen Turner, and half-sister of Chelsea Fox. The Fox family were introduced by executive producer Kate Harwood. The character of Libby was featured in a prominent storyline in 2006, when Owen attempts to murder her. The character then cultivates a relationship with her peer Darren Miller. She is portrayed as intelligent and competitive. The character was axed in April 2010 and her departure episode was broadcast on 5 August 2010. Libby returned in April 2014 as part of the beginning of the Who Killed Lucy Beale? storyline. Since then she continued to make various guest appearances up until 31 January 2017.

Denise Fox is a fictional character from the BBC soap opera EastEnders, played by Diane Parish. She made her first appearance on 11 May 2006 and temporarily left EastEnders in early 2008 to give birth to her second child. Her leave-taking had coincided with the departures of Matt Di Angelo, Phil Daniels and Kellie Shirley. She returned to Walford on 6 June 2008. This is Parish's second role in EastEnders, as she previously played singer Lola Christie in 1998.