In 1994, screenwriter Andrew Kevin Walker wrote a draft of the script: the X-Men (Professor X, Cyclops, Jean Gray, Beast, Iceman, Angel, and new member Wolverine) must stop the Brotherhood of Mutants (Magneto, Sabretooth, Toad, and new member the Blob) from conquering New York City, while at the same time are set upon by a triplet of Sentinels, robots created by anti-mutant government officials Henry Peter Gyrich and Boliver Trask. The script focused on the rivalry between Cyclops and Wolverine, and had Magneto the cause of the Chernobyl disaster; also included was the X-Copter and the Danger Room. The script was never used, but dialogue and plot elements were used in the movie's official novel adaptation.