Jennifer Check is a titular character of Jennifer's Body.
Jennifer Check was a popular high-schooler who was unwillingly sacrificed by the band Low Shoulder in a satanic ritual, resulting in becoming a succubus and her retaliating to feast on their flesh and blood, equipped with new supernatural abilities. She is portrayed by Megan Fox.
==Biography= She was born on August 7th, 1992 in a small town in the Minnesota called Devil's Kettle. She became best friends with a girl named Anita Lesnicki at a young age. As they grew up together, Jennifer became the popular girl, whereas Anita became the quieter one and was even nicknamed 'Needy' by many kids.
On February 18th, 2008, they went to Melody Lane where a band group called Low Shoulder was performing. The lead singer, Nikolai Wolf, was interested in Jennifer only because he suspected she's a virgin. Unbeknownst to her or anyone, the group were actually Satanists and were looking for a virgin to sacrifice to Satan so they could become rich and famous. As they were playing, the bar mysteriously caught on fire, completely annihilating it and killing almost everybody.
After Needy and Jennifer got out of the bar, Low Shoulder took shocked Jennifer into their van. While Jennifer was in their van, she saw occult books and various satanic items that scared her. Once they drove into the woods, Jennifer unsuccessfully tried to escape. They forced her onto the ground, and tied her up and performed a chant before brutally stabbing Jennifer to death. Unbeknownst to the band, Jennifer was not a virgin. Instead of dying, she turned into a demon and gained superhuman abilities, speed, seduction, beauty and immortality. There was one catch, as she would forever feast on human (particularly young male) flesh to maintain her eternal youth or else she would decay and die. As Needy was about to exit the kitchen, she saw Jennifer drenched in blood, having been stabbed, and sensed something awful had happened to Jennifer. When she walked towards the fridge and tried to eat some food, Jennifer growled at Needy and then vomited a trail of "black ferromagnetic fluid" which seemed almost alive for a short time before leaving Needy's home. Jennifer went on to kill 3 teenage boys (Jonas, Colin, and Ahmet).
On April 18th, As Needy was at the prom looking for Jennifer, Jennifer was seducing Needy's boyfriend, Chip. She lied to him saying that Needy cheated on him with Colin. He almost believed her but because of his love for Needy, Chip decided not to be with Jennifer, though she attacked Chip at the abandoned pool and killed him.