Author, Writer, Original work, Creator · 31 titles
10 titles
Querida, Encolhi as CriançasFilm· 1989Writer, Original work
C.H.U.D. 2Film· 1989Writer
Ghostbusters IIBook· 1989Author
SpellcasterFilm· 1988Original work
Bonecas MacabrasFilm· 1987Writer
RobocopBook· 1987Author
Troll - O Mundo do EspantoFilm· 1986Writer
Os Guerreiros do Reino PerdidoFilm· 1985Writer
The Suicide PlagueBook· 1982