The RHOBH edition of Fox Force Five includes current stars Kyle Richards, Lisa Rinna, Erika Jayne, and Dorit Kemsely. The fifth and final member of the group is Teddi Mellencamp, who was on RHOBH from Seasons 8 to 10.
The “Fox Force Five” name itself appears to come from Quentin Tarantino’s 1994 film, Pulp Fiction. In the movie, Fox Force Five is the name of a television show that Uma Thurman’s character, Mia Wallace, filmed a pilot episode for.
Source: https://www.distractify.com/p/who-are-the-fox-force-five-rhobh