Bryan Singer wanted Christopher Reeve to make a cameo appearance in the film but Reeve died before filming began. Singer then decided to dedicate the film to him.

• 布赖恩·辛格曾希望克里斯托弗·里夫能在电影中客串一个角色,但是在电影开拍前里夫就去世了。于是辛格决定将这部电影献给他。