Wally Gator was first introduced in 1962 as part of the syndicated television package The Hanna-Barbera New Cartoon Series, which included two unrelated cartoons, Touché Turtle and Lippy the Lion & Hardy-Har-Har.
Wally Gator lived comfortably at the city zoo, but tired of the daily routine and longed for some excitement. As a result, kindly zoo keeper Mr. Twiddles had his hands full trying to keep Wally from escaping. Wally occasionally returned to the Florida Everglades, his birthplace, but more often sought local adventure. Regardless where he went, he had a way of attracting trouble. His favorite catchphrase was, "Like I always say sometimes..." followed by some sentiment he had never previously uttered.
Like so many Hanna-Barbera characters, Wally Gator appeared in numerous other series, such as Yogi's Gang (1973) and Scooby's All Star Laff-A-Lympics (1977) once his own self-titled series came to an end.