From Wikipedia, the free encyclopedia. William Horace Marshall (August 19, 1924 – June 11, 2003) was an American actor, director, and opera singer. He is best known for his title role in the 1972 blaxploitation classic Blacula and its sequel Scream Blacula Scream (1973), and as the "King of Cartoons" on the 1980s television show Pee-wee's Playhouse beginning with its second season, and an appearance on the original Star Trek television series. He had a commanding height of 6 ft 5 in (1.96 m), as well as a deep bass voice. Description above from the Wikipedia article William Marshall (actor), licensed under CC-BY-SA, full list of contributors on Wikipedia