Anders dan bij de eerste film, laat schrijver/regisseur Joss Whedon overal kleine stukjes info los over de aankomende sequel Avengers: Age of Ultron. Hij sprak over de toevoeging van Quicksilver en Scarlet Witch, Hawkeye’s rol in de film, het gemis van Agent Coulson, en nu hoe Scarlett Johansson’s Black Widow te zien zal zijn in de film:
“Natasha is a huge part of the sequel because you do want to concentrate on the people who don’t have their own franchises. Although she in ‘Cap 2,’ [and] she’s great. She was the most fun for me because she’s not a hero, you know, and it’s something that I read and I feel bad that I can’t remember who wrote the book but it’s in one of the books explaining, ‘These guys are heroes, you are a spy. It’s a different thing it’s a different skill set and you don’t have their moral high ground or any of that good stuff.’ And that just makes her so interesting to me. So yeah, the stuff I’ve got going on with her in the second one is killer.”
Johansson speelt de rol van Black Widow wederom in Captain America: The Winter Soldier, welke 4 april 2014 uitkomt.