Jennifer Check's villainous behavior was not really her own fault. Well, her actions prior to being sacrificed to Satan were certainly her own fault. I felt she was equally annoying before her abduction as after - little miss flag girl had nothing in common with her supposed BFF and treated her like crap.
After her transformation into hot-demon-chick, she starts killing boys at her school and feels absolutely no remorse for the deaths at the bar caused by the satanic band members who brought about her...alteration.
She starts spewing black oily gunk (a 'la The X-Files) and in a really taboo moment, comes on to her best friend's boyfriend. Rude!
After being satisfied by the blood of a goth guy from school, she seems to function fairly well for about a month - but then she needs to feed. Seriously resembling Pennywise the clown when in action, she continues on her rampage of death and witty banter.
I actually found Needy to be the more kick-ass persona, especially at the end of the film.
But the movie isn't Needy's Body - so there you have it.
While at times, I found this movie to be rather annoying due to the ridiculous (and soon to be very dated) slang used throughout, it was still a fun popcorn kind of film, with no real purpose other that to showcase Megan Fox's hotness and Diablo Cody's smart-ass screenplay.
But Jennifer was a real man-eater. Figuratively as well as literally.
*Buy it here.