William Thomas, Jr. (born November 1947 in Columbus, Ohio) is an African American actor. He is known for his recurring role as Vanessa Huxtable's fiancé Dabnis Brickey on the long-running NBC sitcom The Cosby Show. He portrayed the character from 1991 to 1992, during the series' eighth and final season.
Prior to his work on The Cosby Show, Thomas portrayed Cool Charles on the critically acclaimed but short-lived 1987-1988 CBS comedy-drama Frank's Place, which starred Tim Reid and his wife Daphne Maxwell Reid. He also portrayed Det. William Donald Potts on Steven Bochco's widely-panned 1990 ABC musical-drama Cop Rock.
Before coming to Hollywood, William appeared on Broadway in Godspell, Your Arms Are Too Short to Box with God, and as Jacob in the original production of La Cage aux Folles.
He has also appeared on The Bold And The Beautiful in 2005 as an INS agent.
Movie credits include "Mambo Kings", "Bruce Almighty", and "Christmas with the Kranks"