Although the series is "free-standing", ongoing artistic influences can be inferred from the ways certain characters were drawn for animation similar to the animation from the fellow Klasky Csupo series, Rugrats, Aaahh!!! Real Monsters, The Wild Thornberrys and Rocket Power.
A new character named Franklin was also introduced in the first volume in 1998 as the son of Dr. Quizzical (a scientist who was the inventor of Hamburglar's "Quizzical Bear Call" that was seen earlier in that one episode).