William E. Martin

Among Martin's screenwriting credits was the 1987 movie Harry and the Hendersons. Martin's first movie voice role came in the 1971 animated movie The Point as the Rock Man and later in the 1989 animated movie Little Nemo: Adventures in Slumberland as the villainous Nightmare King. He also had a cameo role in Hey, Hey, It's the Monkees, the 1997 television movie which reunited the full band. He was the model for Bigfoot in Harry and the Hendersons.

Martin co-starred with Nesmith in his Grammy-winning Elephant Parts in 1981, and Nesmith also produced An Evening with Sir William Martin, with Martin delivering a half-hour monologue dressed in a smoking jacket and parodying Orson Welles, interspersed with different character voices.

A later teaming with singer-songwriter Harry Nilsson resulted in the song "Rainmaker", released in two different versions by Nilsson (on single and on LP) in 1969. Nilsson also covered some of Martin's songs, including "Fairfax Rag" and "City Life". Martin released a concept album in 1970, titled Bill Martin's Concerto for Head Phones and Contra-Buffoon in Asia Minor. It failed to sell. Shortly after their initial collaboration, Nilsson's film The Point would feature Martin's voice talent in the character of the Rockman.

William E. Martin (October 8, 1945 – January 27, 2016) was an American musician, songwriter, screenwriter, and voice actor.