Common Sense Note
Parents need to know that amped-up violence and language make The Vampire's Assistant movie too mature for younger tween fans of the Cirque du Freak books it's based on. There are several disturbing scenes of vampires stabbing, punching, kicking, and otherwise wiping the floor with each other (although none of it gets particularly gory), along with potentially disturbing images of circus "freaks" and fairly regular use of words like "s--t," "a--hole," and the like. Although the sexuality is on the mild side (especially for a vampire tale), there are a few kisses and a brief glimpse of the protagonist about to suck blood from a willing love interest.
A couple of embraces and kisses between Crepsley and Madame Truska (as well as a joke about her beard growing out as a sign of arousal) and Alexander and Jane. Chaste flirting between Darren and Rebecca and a lips-only kiss (which does make her monkey tail stand on end...).
Although many of the fight scenes are slightly comic, there's plenty of violence, including stabbings with knives and swords, fistfights, kicking/stomping, slashings with vampire nails, and the protagonist having his neck broken for the sake of faking his death. Most of it isn't gory or bloody (surprising for a vampire movie!), but it's still fairly dark. There are also possibly disturbing scenes of the titular "freaks" (a girl with a monkey tail, a boy who's green/scaly like a snake, a man with two bellies, a woman who can rip off her limbs and regenerate them, a man with no skin covering his lower abdomen/ribs, a Bearded Lady, and more.). And those who are afraid of spiders will have several "look away" moments.
Several uses of the word "s--t" and its cousins "bulls--t" and "holy s--t/crap," as well as a few utterances of "a--hole," "ass," "hell," "dick," "oh my God," and milder insults like "jerk," "wimp," "stupid," and "idiot."
Kids can learn about self-awareness, sacrifice, and courage through Darren transformation's from regular teenager to half vampire. Crepsley, despite being centuries-old and curmudgeonly, demonstrates the importance of not being completely self absorbed. Together, and with the help of the circus folk, they triumph over a looming threat.
Drugs / Tobacco /
Adults and vampires drink socially on a couple of occasions.