Dr. Dorian Lord Vickers Buchanan (née Cramer; formerly Callison, Santi, Vickers, Hayes, and Laurence) is a fictional character and matriarch of the Cramer family on the American daytime drama One Life to Live, most notably played for 23 years by actress Robin Strasser. Strasser was cast by series creator Agnes Nixon and debuted on the episode first-aired April 13, 1979. For most of the show's history, the character is the show's primary antagonist and Byronic hero.