Inspector Seward Willoughby is a cartoon character created by Walter Lantz and Paul J. Smith, named after the Hollywood avenue which runs alongside the building where Lantz's office was housed (at 861 Seward Street).
[1] Initially created as a recurring secondary character, Willoughby starred in his own series of shorts with him as a crime fighting secret agent.
[2] Inspector Willoughby (AKA Secret Agent 6 7/8) initially made his first appearance in the 1958 Windy & Breezy cartoon Salmon Yeggs as a cannery security guard.
He would serve as a recurring character for several more cartoons with Windy & Breezy, as well as with Woody Woodpecker and Fatso the Bear, before receiving his own series in 1961.
Despite his diminutive height, he is able to physically restrain and use impressive judo moves on men twice his size.