Muhammad Ali was considered for the role of Superman. Michael Keaton and Tim Burton never read Batman until they made the film. The director of X-Men thought Hugh Jackman would be an awful Wolverine. It cost $100,000 to make one Spider-Man costume. It took 360 days for one animator to make one shot in Avengers: Age of Ultron. Batman Begins was supposed to be called Batman: The Frightening. In the court room scene of The Dark Knight Rises, Bane can be seen knitting in the background. Ironically, Nicholas Cage had to have his Ghost Rider tattoos covered to play Ghost Rider. Iron Man's AI unit, Jarvis stands for "Just A Rather Very Intelligent System." In the Dark Knight, Heath Ledger kept licking his lips as the Joker because the makeup kept dripping into his mouth. Bruce Wayne cameos in the beginning of Watchmen. Chris Evans turned down Captain America three times and got the part without auditioning. In Guardians of the Galaxy, Benicio Del Toro based his character, The Collector, off Liberace.