Caesar was born in Harlem, New York City, New York, in 1933, the youngest of three sons born to a Dominican mother and a black indigenous father.[2] At age 12, he contracted laryngitis which resulted to his notably deep voice.
Caesar made his film debut in 1969 in Che!, playing Cuban revolutionary Juan Almeida Bosque. A year later, Caesar became an announcer for and then joined the Negro Ensemble Company in 1970 for productions such as The River Niger, Square Root of the Soul, and The Brownsville Raid. Caesar also later worked with the Minnesota Theater Company, Inner City Repertory Company, and the American Shakespeare Theatre. He had a stint on the soap operas Guiding Light and General Hospital in 1964 and 1969, respectively.
Thanks to his voice, Caesar found frequent work as a voiceover artist for television and radio commercials, including theatrical previews and radio commercials for many blaxploitation films such as Cleopatra Jones, Superfly, Truck Turner and The Spook Who Sat by the Door. For many years, he was the voice of the United Negro College Fund's publicity campaign, reciting the iconic slogan "...because a mind is a terrible thing to waste."
Later in his career, Caesar also lent his voice to the animated series Silverhawks, in which he voiced Hotwing, a magician and skilled illusionist.[citation needed]
In a 1985 interview with the Los Angeles Times, Caesar stated, while crafting the character of Waters, he drew on his experiences with racism in Classical theatre. "I’d studied Shakespeare to death.... After I did one season at a Shakespearean repertory company, a director said to me, ‘You have a marvelous voice. You know the king’s English well. You speak iambic pentameter. My suggestion is that you go to New York and get a good colored role.' Waters has tried his best, but no matter what you do, they still hate you." Caesar subsequently coined the character's signature phrase, "They still hate you."[1]