Overview

• The Fantastic Four: First Steps is Marvel Studios’ first film to depict a superhero giving birth, with Sue Storm delivering mid-mission.
• Kirby said she tapped into a “mother’s rage” during her showdown with Galactus to convey a primal drive to protect her child.
• The in-space birth sequence was shot over several weeks on a spaceship set, requiring hundreds of takes that strained her voice and prompted crew earplugs.
• Filming with real infants, led by baby Ada, added authenticity but introduced logistical hurdles during late-night shoots in London.
• Wearing a weighted foam belly filled with rice packets caused backache and deepened Kirby’s personal insights into motherhood ahead of a post-credit tie to Avengers: Doomsday.