Space Ghost is a fictional character created by Hanna-Barbera Productions and designed by Alex Toth for CBS in the 1960s. Space Ghost is credited with being almost single-handedly responsible for the popularity of superhero cartoons in the 60's.
In his original incarnation, he was a superhero who, with his sidekick teen helpers Jan, Jace, and Blip the monkey, fought supervillains in outer space. In the 1990s, the character was brought back as a host for his own fictional late-night talk show, Space Ghost Coast to Coast, on Cartoon Network and Adult Swim. In the 2000s, he was revamped as a serious superhero once again in a mini-series by DC Comics.