Tags: Soap Character.
Jeffrey Broderick Jeff Colby is a fictional character on the American TV series Dynasty and its spin-off The Colbys.The role was originated by John James in the show’s first episode in 1981 and the character was eventually spun off onto a separate series called The Colbys. Jeff Colby (portrayed by James) returned to Dynasty in 1987 and remained on the show until the finale in 1989.