Keith David Williams (born June 4, 1956; 63 years old), better known as Keith David, is an American film, television, voice actor, and singer. He is best known for his roles Dr. Facilier in "The Princess and the Frog", Goliath on the Disney series "Gargoyles", Spawn/Al Simmons on Todd McFarlane's "Spawn" which aired on HBO, The Aribter in the "Halo" series, And David Anderson in the "Mass Effect" series.
- Ciro Nieli, one of the shows producer, is a huge fan of the terror genre, specially when it comes to John Carpenter's work. He liked very much to be able to work with Sal's voice actor, Keith David, who appeared in to of Carpenter's films, "The Thing", which inspired the episode "Buried Secrets", and "They Live!", which inspired the design of Mrs. O'Neil's clone monster face in the same episode.