High Quality Content by WIKIPEDIA articles! Robert "Bob" Guillaume (born November 30, 1927) is a American stage and television actor, best known for his role as Benson Du Bois on the TV-series Soap and the spin-off Benson, voicing the mandrill Rafiki in The Lion King, as Isaac Jaffe on Sports Night, and as Eli Vance in the Half Life 2 series. On leaving University, Robert joined the Karamu Players in Cleveland and performed in musical comedies and opera. He toured the world in 1959 as a cast member of the Broadway musical Free and Easy. He made his Broadway debut in Kwamina in 1961. (A reference on a Columbia LP shows this as "Dwamina".) Other stage appearances included Golden Boy, Tambourines to Glory, Guys and Dolls, for which he was nominated for a Tony Award, Jacques Brel is Alive and Well and Living in Paris, the Los Angeles production of The Phantom of the Opera (succeeding Michael Crawford in the lead role), and Purlie!. Added roles were in Katherine Dunham's Bambouche andin Fly The Blackbird.