Robert Guillaume (born Robert Peter Williams; November 30, 1927 - October 24, 2017) was an American stage and television actor, known for his role as Benson on the TV-series Soap and the spin-off Benson, voicing the mandrill Rafiki in The Lion King and as Isaac Jaffe on Sports Night. In a career that has spanned more than 50 years he has worked extensively on stage (including a Tony Award nomination), television (including winning two Emmy Awards), and film.