Character mistake: When Edward leaves Forks, he does it because he believes that he will be protecting Bella. Except that he seemed to have forgotten that Victoria was still in Forks and was intent on killing Bella.
Character mistake: While he is describing his origin, Dr. Manhattan mentions a circulatory system appearing at a military base. However, what is actually shown is a nervous system, as it depicts a brain and spinal cord.
Character mistake: In a scene on Johnny Whitefeather's patio, his son is referred to as a "ten-year-old boy." Later, in a business meeting, Whitefeather says his son is nine.