Black Widow fans don't need to worry about the Russian spy's place in Avengers: Age of Ultron, as writer-director Joss Whedon promises big things for super-agent Natasha Romanoff when Earth's Mightiest Heroes return for the 2015 sequel.

"Natasha is a huge part of the sequel because you do want to concentrate on the people who don't have their own franchises," Whedon said during a Nerd HQ interview at Comic-Con International. "Although she's 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."

That bodes well for fans of the Widow-Hawkeye pairing, as Whedon also said Clint Barton has much more to do in the Avengers sequel than the previous film: "He did get possessed pretty early by a bad guy and had to walk around all scowly for most of the movie, so now it's nice to actually have the character there and see him interact with the other guys."

(via MTV)