Steve Johnson (born Steven Marcus Jacobs; February 7, 1960) is an American special effects artist whose career has spanned more than thirty years. His work has appeared in over 200 films, countless television shows, theme parks, commercials, and music videos. Some of his best-known creations include Slimer for Ghostbusters (1984), the alien seductress Sil for Species (1995), Robin Williams's robotics for Bicentennial Man (1999), and Doctor Octopus's arms for Spider-Man 2 (2004).