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.
Sheila Carter
Sheila returns to Genoa City (on "The Young and the Restless") after being unseen for ten years, and begins terrorizing Lauren once again, by indirectly turning her now-adult son Scott (Blair Redford) against her, under the alias Brenda Harris. It is soon revealed that the woman in the psychiatric hospital who was believed to be Sheila is actually Sugar - Sheila drugged and tricked her into having plastic surgery in order to look just like Sheila, and then turned Sugar in to the police. Meanwhile, the real Sheila develops another persona, Jennifer Mitchell, by wearing a fake nose, wig, and speaking in a British accent. She allies with Tom Fisher (Roscoe Born), who helps her in her scheme to poison Lauren with a necklace that Scott offers to his mother as a gift. In exchange, Tom has Sheila manipulate his estranged wife Gloria Abbott (Judith Chapman) into giving him money and later bailing him out of prison.