Farnsworth "Dex" Dexter is a fictional character on the ABC prime time soap opera Dynasty. Portrayed by Michael Nader, the character was introduced as a love interest for Alexis Colby in the series' fourth season in 1983. He became her third husband, and arguably the second great love of her life, after Blake Carrington. Even after the end of their marriage, Dex remained a strong force in Alexis's life. Dex Dexter remained on the series until its final episode in 1989. Nader did not reprise his role for the 1991 miniseries Dynasty: The Reunion, though the character was mentioned. In 2022, Pej Vahdat was cast as Dex for the fifth season of the CW reboot series Dynasty.