The MCU’s Infinity Saga might be the single most successful undertaking in Hollywood history. A single movie, featuring a B-level comic book character played by a troubled star, led to billions in ticket sales, countless fans around the world, and a cultural impact we might never see again. And Marvel Studios made it up as they went along. That much is clear from the tale of the magical space rocks that ended up giving the saga its name. James Gunn says he came up with the story of the MCU’s Infinity Stones in “two seconds.” Only then did Marvel retconn where some had been hiding the whole time.

In an interview with GQ , the new creative head of the DCU, James Gunn, discussed how he helped shape the overarching story that defined the first three phases of the MCU, especially when it

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