Space Ghost is a fictional character created by Hanna-Barbera Productions and designed by Alex Toth for CBS in the 1960s. He was a superhero who, with his sidekick teen helpers Jan, Jace, and Blip the monkey, fought supervillains in outer space.
The original series debuted in 1966, in which the “Space Ghost” segments shared time with an unrelated segment called Dino Boy in the Lost Valley. Space Ghost was voiced by Gary Owens, Tim Matheson voiced Jace (Matheson was the voice of “Jonny” in Jonny Quest, another Hanna-Barbera adventure cartoon series) and Ginny Tyler voiced Jan. Don Messick provided vocalizations for Blip. Space Ghost and his helpers fought such recurring supervillains as Moltar (voiced by Don Messick), Zorak (voiced by Don Messick), Black Widow (voiced by Ginny Tyler; the character was named the Spider Woman in seven episodes), Metallus (voiced by Ted Cassidy), Brak (voiced by Keye Luke), and Creature King (voiced by Vic Perrin). The original series comprised 42 Space Ghost and 18 Dino Boy episodes, and ended in 1968.
Twenty-two new Space Ghost segments appeared on Space Stars in 1981. The episodes introduced a new assortment of villains including an evil version of Space Ghost named Space Spectre (voiced by John Stephenson) who came from an alternate universe. His spaceship, the Phantom Cruiser, was also given a sleeker and more modernized look. As in the original series, Space Ghost often came to the aid of The Herculoids and vice versa. They also frequently crossed paths with the Teen Force, and it appeared that Jan and Teen Force member Kid Comet were dating as well. Gary Owens reprised his role as Space Ghost, but Tim Matheson was replaced by Steve J. Spears as the voice of Jace, Ginny Tyler was replaced by Alexandra Stewart as the voice of Jan, and Don Messick was replaced by Frank Welker as the vocal effects for Blip.