Robert Guillaume (born Robert Peter Williams; November 30, 1927 – October 24, 2017) was an American actor and singer, known for his role as Benson DuBois in the ABC television series Soap and its spin-off, Benson, as well as for voicing the mandrill Rafiki in The Lion King and related media thereof. In a career that spanned more than 50 years he worked extensively on stage, television and film. For his efforts he was nominated for a Tony Award for his portrayal of Nathan Detroit in Guys and Dolls, and twice won an Emmy Award for his portrayal of the character Benson DuBois, once in 1979 on Soap and in 1985 on Benson. He also won a Grammy Award in 1995 for his spoken word performance of an audiobook version of The Lion King. He is also known for his role as playing Eli Vance in the video game Half-Life 2.

Early life
Guillaume was born Robert Peter Williams in St. Louis to an alcoholic mother. After she abandoned him and several siblings, they were raised by their grandmother, Jeannette Williams. He studied at Saint Louis University and Washington University in St. Louis and served in the United States Army before pursuing an acting career. He adopted the surname Guillaume (French for William) as his stage name.