Weapon X Program

The Weapon X Program is mentioned by Pepper Potts through communication link between Iron Man and War Machine about Magneto's background.

Magneto
Magneto says to Jean Grey that as a boy, the Weapon X scientists did experiments on him.

Trivia/Background Information

 * In the comics, the superhero Wolverine (a mutant like Magneto, Jean Grey and Professor X) was injected with adamantium because of the Weapon X program.