Cosmo G. Spacely is a cartoon character in the animated series The Jetsons. and the main anti-hero. In the original series he was voice by the late Mel Blanc. Frank Welker voiced a teenage version of Mr. Spacely in the Jetsons Christmas Carol and Jeff Bergman voiced Spacely in some scenes in Jetsons: The Movie after Blanc's death, as Blanc died during the production of Jetsons: The Movie. This means the character has the distinction of being the last character to be voiced by legendary voice actor Blanc.