Disney has proved itself a juggernaut once again by purchasing 20th Century Fox, meaning we might one day see the X-Men cross paths with the Avengers. But interestingly, the MCU might have already given us clues suggesting one mutant was already skulking around somewhere off-camera: Wolverine. Believe it or not, adamantium -- the metal comprising Wolverine's unbreakable claws -- has been mentioned in the Marvel Cinematic Universe before. This might be shocking, considering the Marvel Cinematic Universe is owned by Disney and the X-Men are owned by 20th Century Fox (until this deal receives the necessary approval), but a small detail snuck its way into the MCU undetected: Photo Courtesy Reddit These are the blueprints for Captain America's shield, close-ups of which appear in the bonus features of Iron Man 2 . If you look closely, you can see a note from Stark that reads, "adamantium alloy -- [too] much bounce." Presumably, Stark used adamantium
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