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.
Judith Chapman
She made her first appearance on "The Young and the Restless" after that, briefly subbing for Jess Walton as Jill Abbott. She joined the cast of "The Young and the Restless" full-time in January 2005, replacing Joan Van Ark in the contract role of Gloria Fisher. In March 2011, it was announced that Chapman had been taken off her contract and bumped to recurring. In October 2014, it was announced that she would make a guest appearance as Gloria on "The Bold and the Beautiful". Although she made a few more appearances on "The Young and the Restless" into early 2015, she later indicated on numerous sources, including her Facebook fan page, that she believed that she had made her final appearance on "Y&R", and that she didn't believe the show would be using the character any longer. However, in December 2016, she made a triumphant return as the character of Gloria was once again thrust into the middle of a front burner storyline.