Joke about turning a flame thrower on kittens. Kids are sad in their prison-like school. George and Harold are terrified by the idea of being put in separate classes. Tension when the boys sneak into Krupp's office. Krupp always seems to be angry and yells a lot. a villain is hit by vehicles three times in quick succession. Lots of slapstick: Captain Underpants jumps out of windows, nearly falls to his death, punches 'bad guys' (a mime, in one case), etc. Carnival rides go AWOL, a school is upended. A gun that can make things bigger and smaller wreaks havoc. The villain travels with lots of weapons (axe, mace, dynamite, etc.) and ultimately attacks the school with a gigantic robotic monster - but just when the climactic battle gets tense, it switches to flip-book animation style. An imaginary sequence featuring sock puppets includes laser weapons, smoke, and destruction. Some peril/action violence, but much of it is lightened by humor and animation style.
