Sheila Carter
The role was portrayed by Kimberlin Brown for a total of 16 years. Her first run was on "The Young and the Restless" from May 1990 to May 20, 1992, when the character crossed over to "The Bold and the Beautiful" from May 21, 1992, to October 2, 1998, again from May 24 to November 5, 2002, and again finally from September 26 to October 10, 2003. Despite being a regular cast member on "The Bold and the Beautiful", Brown returned to "The Young and the Restless" for several guest appearances beginning on October 27, 1992. Brown departed on November 5, 1992, and reappeared for one episode on December 23, 1992. She continued making appearance from January 7 to 14, 1993, February 19, 1993, to March 2, 1993, October 11, 1993, October 19 to 27, 1993, January 12, 1994, and February 28, 1995, until March 2, 1995.
Katherine Chancellor
In 2005, Cooper appears as Katherine on "The Bold and the Beautiful" when she is approached by Massimo Marone (Joseph Mascolo) who introduces her to Stephanie Forrester (Susan Flannery), the daughter of Katherine's old business acquaintance, John Douglas. Katherine is revealed to be the true owner of "Forrester Creations", thanks to a trust set up by Stephanie's father. Katherine helps Stephanie reclaim the company from her estranged husband, Eric Forrester (John McCook). In 2008, Katherine has a minor stroke while secretly trying to help Marge Cotrooke get into rehab.