Deon Estus, George Michael, and Andrew Ridgeley are all members of which 1980s band? 
Deon Estus: Deon Estus (born Jeffery Deon Estus, July 4, 1956, Detroit, Michigan) is an American bassist and singer, best known as the bass player of Wham! Wham!:  was an English musical duo formed by members George Michael and Andrew Ridgeley in 1981.
Wham!