Secret Squirrel, voiced by Mel Blanc, served as a secret agent (his designation was "Agent 000"), taking orders from his superior, Double-Q. Secret was assisted in his adventures by fez-wearing sidekick, Morocco Mole. The pair fought crime and evil agents using cunning and a variety of spy gadgets, including a machine gun cane, a collection of guns kept inside Secret's coat, and a variety of devices concealed in his hat (which he almost never removed).
Secret Squirrel's recurring arch-enemy is Yellow Pinkie, who is a parody of Auric Goldfinger from Goldfinger and Kasper Gutman from The Maltese Falcon. The last bunch of episodes introduced Hy-Spy, the master of scientific criminology.
The shorts were a parody of the then-popular spy genre, with most of his shorts' elements satirizing those of the James Bond films. In 1994, Secret Squirrel started appearing in new cartoons in between the 2 Stupid Dogs episodes. It was called "Super-Secret Secret Squirrel". A new character in "Super-Secret Secret Squirrel" is a female squirrel named Penny (who has a big crush on Secret).