Jennifer Check is a fictional character from the 2009 horror-comedy film Jennifer's Body, directed by Karyn Kusama. Portrayed by Megan Fox, she is a high school cheerleader who becomes possessed by a demon after a failed ritual. This transformation leads her to prey on her male classmates, resulting in a series of gruesome events. The film explores themes of friendship, betrayal, and the complexities of female relationships. Jennifer Check's character serves as a commentary on societal expectations of women and the consequences of unchecked desire. The movie has gained a cult following for its unique blend of horror and dark humor.