Michael Culhane is a fictional character from the ABC television series Dynasty, created by Richard and Esther Shapiro. Portrayed by Wayne Northrop, the character is introduced in the series' 1981 pilot episode as the chauffeur of oil tycoon Blake Carrington (John Forsythe). Michael is also having an affair with Blake's self-indulgent daughter, Fallon (Pamela Sue Martin). Northrup left the series at the end of the first season, but returned for season seven, during which Michael dates Fallon's sister, Amanda (Karen Cellini). In The CW's 2017 reboot of the series, Michael is portrayed by Robert Christopher Riley.