Gary Owens: Gary Owens. Actor: Swat Kats: The Radical Squadron. Gary Owens was an American voice actor, radio announcer and narrator who was known for being the original voice actor of Hanna-Barbera's Space Ghost, Powdered Toast Man from The Ren & Stimpy Show and Blue Falcon from Dynomutt, Dog Wonder. George Lowe became Owens' successor as the voice of Space Ghost since 1994. He passed away from diabetes complications in February 2015....