While James Marsden was unavailable due to filming Superman Returns (2006) at the same time as this movie, Twentieth Century Fox had always planned to have Jean Grey kill off Cyclops in this movie. Zak Penn talked about the lack of Cyclops in this movie on the message boards of the now-closed website The X-Verse, in which he participated in Q&As with fans, and could only say to the fans, while the movie was being made, that if they expected to see more of Cyclops, then fans were going to be disappointed. Penn would later say after the movie's release, that he and co-Writer Simon Kinberg fought with Fox not to kill Cyclops, but the studio insisted the character die to have a more emotional impact. The decision to kill off Cyclops received heavy backlash from fans and moviegoers, and fans still debate whether the character actually even died, since his death wasn't shown on-screen, and neither Storm nor Wolverine bothered to search for him when they find Jean alone at Alkali Lake.