Keith David Williams (born June 4, 1956), better known by the stage name Keith David, is an American film, television, and voice actor who voiced Decker in Fallout. He is perhaps most known for his live action roles as a military officer in such films as Crash, Platoon, There's Something About Mary, Barbershop, ATL and Men at Work. He is also known for voice acting Mr. President in Rick and Morty and the Flame King in Adventure Time. In video games, he has done voice work in Saints Row, Saints Row 2, Modern Warfare 2, the Mass Effect trilogy, and the Halo series. He can be seen currently in his role as "Bishop James Greenleaf", in the OWN series Greenleaf.