When I was a child I loved Secret Squirrel, the spy, designation 000, created by Hanna-Barbera. The series debut was September 12, 1965 in The World of Atom Ant and Secret Squirrel prime-time special on NBC. The series was called The Atom Ant/Secret Squirrel Show and aired from October 2, 1965 until September 2, 1967.