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there a small sexual references throughout the film, not may of them easy to notice, especially for the little ones...
Nothing much, except some characters fall down and bump on trees.
none.
some of the workers act seemingly drunk but that's for up for discussion.
The villain might be scary for younger viewers. The picture on the box shows a large, white ghost resembling Caspar. In fact, the villain is a black skeletal morphing shape filled with dramatic red fire. The shape crawls along and controls the "Leveler" tree cutting machine and can change shapes at will. Scene 12 (actually a pretty clever musical scene for "Hexxus") is easily skipped on dvd, but the final scene really can't be avoided and could be very disturbing for young kids.