 They are the children of Roman Brady and Kate Roberts.Created by Peter Brash and Paula Quickly, the role of Cassie was cast with Alexis Thorpe, who had previously portrayed Rianna Miner on "The Young and the Restless".Thorpe appeared as a contract player from July 8, 2002, to December 1, 2003, at which point the character was believed to have been murdered, reappearing on April 27, 2004, alive and well.