Captain America: The Winter Soldier The film featured extensive use of digital doubles. Russell Earl, ILM visual effects supervisor, said, "The character that we did the most work on was Falcon. We knew we were going to do CG wings. We also did some shots with wires and some with stunt doubles and head replacement. And we needed a very good digital double." Lola VFX, who worked on the pre-serum Steve Rogers scenes in this film and "Captain America: The First Avenger", also worked on shots featuring an elderly Peggy Carter. This involved digitally transposing the facial features of an elderly actress onto the face
Captain America: The First Avenger team of that name, and in November Johnston refuted speculation that the Sub-Mariner, an Invaders team-member in the comics, would be included. Johnston later explained that "the Invaders" had been discussed simply as a possible name for the squad of commandos Captain America leads in the film. Christopher Markus, one of the screenwriters, said the unnamed group was "called the Howling Commandos in the script, but no one says that out loud." The design as a whole tried to create technology that could be built in the 1940s, though with the added Cube technology in Hydra's case. Abandoned Nazi projects