In Mark Millar's Civil War comic book mini-series, Marvel characters were either for or against the Superhero Registration Act. In Captain America: Civil War, they are either for or against the Sokovia Accords, which states: Superheroes "shall no longer operate freely or unregulated, but instead operate under the rules, ordinances and governances of the afore mentioned United Nations panel, acting only when and if the panel deems it appropriate and/or necessary."
In the comics, Vision rebelled against the SHRA, siding with Captain America, and played a important role in the climactic battle against Iron Man and his backers. But in the film, Vision will side with Iron Man. Why? We don't know yet. Perhaps, the part of the JARVIS A.I. that courses through his wiring makes him lean toward Tony Stark. Or, perhaps he just believes superheroes need some government supervision to keep them in check.
Sina Entertainment chatted with the Captain America: Civil War directors, Anthony and Joe Russo, and they were asked if the red-skinned android plays a big part in the film. The question produced a tantalizing response. "Vision is a captivating character, and he does play a critical role in the Civil War," Joe Russo told Sina Entertainment. "The comic fans might be able to guess what he is going to do."
Possible spoiler! What Joe is probably referring to, which I alluded to earlier, is that Vision phases through Tony Stark's Iron Man armor during the final battle and disables it. This provides Captain America with an opportunity to pummel the everything living snot out of Tony, which he does. Sounds like something like that will happen in the film. Neato!
Marvel’s Captain America: Civil War finds Steve Rogers leading the newly formed team of Avengers in their continued efforts to safeguard humanity. But after another incident involving the Avengers results in collateral damage, political pressure mounts to install a system of accountability, headed by a governing body to oversee and direct the team. The new status quo fractures the Avengers, resulting in two camps—one led by Steve Rogers and his desire for the Avengers to remain free to defend humanity without government interference, and the other following Tony Stark’s surprising decision to support government oversight and accountability. Get ready to pick a side and join the nonstop action playing out on two fronts when Marvel’s Captain America: Civil War opens in U.S. theaters on May.
Captain America: Civil War will arrive in theaters on May 6, 2016.