On occasion, Biggie and Itchy are assisted by an evil German inventor named Professor Messer (voiced by Jackson Beck).

Mr. Mad also threatened to throw Biggie and Itchy in "The Room" which contains unseen stuff that frightens both of them should they fail him.

Each half-hour included a two-part King and Odie episode, with other characters featured in between: Another segment of the original King Leonardo show was Twinkles, an orange elephant who served as the mascot of Twinkles Cereal, a product of the show's chief sponsor, General Mills.

The Twinkles segments were not included when King Leonardo And His Short Subjects was syndicated in a half-hour format during the 1980s.

For this reason, and due to shared sponsorship by General Mills, Gamma has often been associated with both Total Television and Jay Ward Productions.

TV Spots was primarily a producer of animated commercials, but also was contracted for some segments of Rocky and His Friends for Jay Ward Productions.

Currently, select episodes of The King & Odie, The Hunter, and Tooter Turtle are showcased as part of a 1996 Underdog syndication package distributed by Golden Books, which currently airs on MeTV Toons.