Mel Blanc gave voice to this lispy secret agent, a cartoon character spoofing the James Bond-era. Mel was teamed up with another legend, Paul Frees, who gave voice to Secret's side-kick, "Morocco Mole". Morocco sounded a little bit like Peter Lorre. the cartoon character shared the bill with "Atom Ant" during 1965-1966. in 1966 Secret got his own program (re-runs of the '65-'66 episodes) and in 1967 Secret was sharing the bill once again with Atom Ant (voiced by Howard Morris and later, Don Messick) until 1968. the character was revived you could say in the late '90s when Cartoon Network began airing new Secret Squirrel shorts as filler whenever there was empty space available.