Spoiler alert: Meet the biggest superhero of ‘Captain America: Civil War’

“We played with a number of different ideas in terms of what it would be, but none of them had the potency of that Giant-Man beat there,” says Anthony Russo.

It also acted as a completion to Ant-Man’s arc, where Scott’s a rookie superhero who gets called up to the big leagues because Cap needs a spot filled and is starstruck by everybody there.

“He’s just really impressed with Captain America, he just wants to deliver and he figures out a way to deliver where he might actually tear himself in half but he’s willing to do it and it works,” Anthony Russo says. “It just lined up on a lot of different levels.”