A tweet was sent out in Spanish a few hours ago and it was deleted. In that tweet was a message declaring that the person had seen an advanced screening of the film and it was accompanied with the image from below. Since the tweet went out it has circulated through the
Prometheus discussion boards and most are in agreement that it's an image of an Engineer. An alien creature that is believed to have created human beings based on a recent television spot.
Prometheus Cast: Meredith Vickers (Charlize Theron), Captain Janek (Idris Elba), Holloway (Logan Marshall-Green), Elizabeth Shaw (Noomi Rapace), and David (Michael Fassbender). The film is directed by Ridley Scott, and will hit theaters on June 8th, 2012!