Introduced in Iron Man 2 and then appearing in The Avengers, Captain America: The Winter Soldier and next summer's Avengers: Age of Ultron, the Black Widow is still a bit of mystery when it comes to her past. While there's been past rumors saying there's a solo Black Widow movie in development, nothing has been confirmed for the super spy.

Speaking of Natasha Romanoff being a super spy, spies get cool toys (see James Bond). Even though the new spy toys were not detailed by actor Scarlett Johansson, she did tease that the Black Widow is getting an upgrade to her spy toys in the Avengers sequel.

"She's always using her experience in her sordid past to her advantage," Johannson told "I don't think there's any super suit that could supersede that for her. I think what she lends to the team — she let's everyone else play with their big toys. And she gets some pretty good toys too, especially in Avengers 2 — I can't complain. [Laughs]"

Johannson then talked about how Black Widow has a criminal mind.

"I think her greatest attribute is that she's — I don't want to say she has a criminal mind, but she does in a way. She's a super spy. Her ability to understand the complexity of the criminal mind, she uses that to her advantage. She's often the one that's going, 'Right, you think it's this way, but if you think about it from this person's perspective, this might be the answer.'"

It's been reported that one of the spy toys being added to the Black Widow's collection, in the Avengers sequel, will be Harley Davidson's first-ever electric motorcycle. Everything else is being kept a secret... for now.

Avengers: Age of Ultron is currently filming in the U.K. and is set to release in theaters on May 1, 2015.