Weta Digital created the wild third act battle for Iron Man 3 — a multifaceted sequence that featured 36 of Tony Stark’s suits performing complex transformations as he swaps in and out of them mid battle, and the glowing Extremis look that affects Killian and his mercenaries. Weta Digital built a fully digital model of the seaport where the action takes place. The sequence was carefully choreographed to depict the suit versus mercenary battle playing out, without distracting from the foreground action between the hero characters.