Secret Squirrel is a funny animal cartoon character created by Hanna-Barbera, and also the name of his segment in the The Atom Ant/Secret Squirrel Show, which debuted in 1965. He was given his own show in 1966, but was reunited with Atom Ant for one more season in 1967. Secret first appeared in a prime-time animated special called The World of Atom Ant and Secret Squirrel, which aired on NBC on September 12, 1965.
The Secret Squirrel half-hours included three individual cartoon segments: "Secret Squirrel," "Squiddly Diddly," and "Winsome Witch." Secret Squirrel's shorts were a parody of the then-popular spy genre, with most of his shorts' elements satirizing those of the James Bond films. Secret Squirrel was also known as "Agent 000". Beginning in 1993, thirteen new Secret Squirrel cartoons appeared in between the 2 Stupid Dogs episodes, with the updated title, Super Secret Secret Squirrel and a new cast. As of September 5, 2011, episode reruns returned on Boomerang from Cartoon Network.