there's really not any evil characters in this film.
the humor is catered more towards adults (as usual with "kiddie" films) and there's even touching moments.
if he/she liked shrek, kung fu panda, any of the pixars, he/she will enjoy this one. go watch it in 3D.
oh, the opening scene had the most violence - chase scene, explosions etc.
more suspense scattered throughout the movie.