Karen Walker (née Delaney; formerly St. Croix, Popeil, and Finster) was born January 12, 1959. She is a fictional character on the American television sitcom Will & Grace (1998-2006). She is portrayed by actress and singer Megan Mullally. Although Karen was originally conceived as a supporting character role for Will & Grace, her escapades became a more prominent part of the show based on positive viewer reaction. She was a multi-millionairess thanks to her marriage to Stan Walker (an unseen character) until discovering he was broke.