Space Ghost was Hanna-Barbera's first superhero character. He debuted on CBS in 1966, as part of Space Ghost and Dino Boy. Space Ghost's signature power was invisibility, a power also possessed by his wards, Jan and Jace, and their monkey, Blip.

Space Ghost had new adventures on Space Stars. Most recently, he was the interviewer on Cartoon Network's talk show spoof Space Ghost Coast to Coast.

His "birthday" is April 30th.