Writer, Original work, Director, Author, Creator · 17 titles
Aliens: O ResgateFilm· 1986Writer
Alien: O Oitavo PassageiroFilm· 1979Writer, Original work
O Vingador do FuturoFilm· 1990Writer
Alien vs. Predador 2Film· 2007Writer
A Volta dos Mortos VivosFilm· 1985Director, Writer
Heavy Metal: Universo em FantasiaFilm· 1981Writer, Original work
Força SinistraFilm· 1985Writer
Dark StarFilm· 1974Writer, Original work
Assassinos CibernéticosFilm· 1995Writer
Trovão AzulFilm· 1983Writer
A Cidade dos Mortos-VivosFilm· 1981Writer
Invasores de MarteFilm· 1986Writer