After Lucy, is there anyone left who doesn't want a Black Widow spin-off movie with Scarlett Johansson? Robert Downey Jr - a man with considerable clout in the Marvel universe - is the latest name to add himself to the list.

LucyScarlett Johansson as 'Lucy'

Speaking ahead of his movie The Judge opening the Toronto Film Festival on Thursday, Downey Jr was asked whether he thought Johansson could carry her own movie.

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"Doesn't Scarlett deserve a break?" he told USA Today, "I think that the interesting thing particularly after Guardians with Zoe (Saldana), (or) even from the first Iron Man where Pepper was kind of this really - to me the Iron Man franchise would never have taken off without (Gwyneth) Paltrow. There's something about her that grounded the story. She's not your typical lady in a superhero movie, and then by Iron Man 3 she's swallowing serums and putting on suits and kicking (butt) and all that stuff."

" would be kind of more appropriate for a character that already was like a Black Widow (to lead a movie). It just seems like whatever Scarlett does people want to go see it."

Watch the 'Lucy' trailer:

Downey Jr even has ideas for the rest of the Avengers gang, saying, "The funny thing is honestly at this point everyone deserves a franchise. I think Jeremy Renner is - when folks see the Avengers: Age of Ultron he's just a rockstar, a badass. And Ruffalo is pumped. He does great (work). I'd like to hear them talk even more seriously about a Hulk franchise, because that's been one of the toughest ones to get right. But I'm sure that my parent company is feeling expansive and and bold after the summer they've had."

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Last week, actress Jessica Chastain called for a Black Widow movie, telling The Wrap, "Where is the Scarlett Johansson superhero movie? I don't understand it, why is it taking so long for this? This woman clearly shows that people want to go see her in the movies. 'Lucy,' didn't it beat 'Hercules' by a lot opening weekend, when it was made for a lot less? She shows that she kicks ass, she's a great actress. 'Under the Skin' is an incredible film, and why are we still waiting for a go-ahead on a superhero movie starring Scarlett Johansson?"

"To me, it's a no-brainer," she added. "You want to make money, put Scarlett Johansson in a superhero movie!"

Luc Besson's Lucy - about a college student who gets superpowers when her brain expands - made $217 million on a budget of just $40 million.

More: check out our Scarlett Johansson pictures