During production, producer Sue Bea Montgomery showed little kids some concepts for the movie and watched the expressions on their faces. Since they especially liked the character of Japeth the Goat, they decided not to delete him, as they had initially planned.
During the interrogation, both Red and Wolf are offering different versions of the same story. Both insist they are innocent of wrongdoing, and both are wearing hoods (Wolf is wearing an athletic hoodie). Both their hoods are primary colors. In every way, they are in competition with each other.
After Kirk the Woodsman gets his call back, Tommy, the lizard director says, "I have to be in a circle wipe, across town." A circle wipe is an effect in television and cinematography in which an image appears as a dot in the center of the screen, then expands to full size while overlaying the preceding image. This is exactly how Tommy appears on the screen when talking to Kirk.
In Red's story when she and Japeth are riding the mine cart, for a few frames you can see Wolf and Twitchy riding past in a different mine cart. Later, in Wolf's story, while recounting the same time period, you can see Red and Japeth for a few frames in the background.
The scene where Boingo is admonishing his henchman, Keith, that his name isn't scary enough and he should change it to Boris, was not scripted. It was ad-libbed by Andy Dick while recording his lines. The dialogue is ironic because the names mean almost the same thing. Keith is Scottish-Gaelic and means, "from the battlefield". Boris is Slavic, and means, "battler, or, warrior".
During the scene when Mr. Flippers is explaining who the Bandit is, and we see Granny signing his clipboard, on the other side is a list of things to do, including: Call Mom, Send Wolf on wild goose chase, Pay off ski team, and others as well.
Boingo says that he was asked to join Mensa. The Mensa website reads, "...potential members must score within the top 2% of any approved standardized intelligence test". Using statistical averages, this means that Boingo's IQ is in the range of 140.