The "Avengers: Age of Ultron Cast" are all around Hollywood these days now that they're almost halfway done filming. Mark Ruffalo has been the media darling as he has been the most candid.

He recently had a Reddit AMA (ask me anything) wherein members of the website can join the chat with the guest and, well, ask them anything.

Ruffalo is knowledgeable about his character and he also admits he was a fan of the Hulk. Although he eventually became a fan of another character:

From Reddit (via Comic Book Movie):

"Q: Hi Mark, are you a comic book fan? Who is your favorite superhero?
RUFFALO:  Well, growing up, when I was little it was the Hulk and Bill Bixby's the Incredible Hulk TV show. But as I got older it was Wolverine, and I have a signed first edition of the Wolverine by Frank Miller. That's pretty cool."

Hulk and Wolverine had a lot of classic fights, but because of ownership, they can never be translated on screen. But Marvel can bring another interesting character and Ruffalo has a great idea on who should play it.

"Q:If you had to pick someone to play my love Jennifer Walters/She Hulk, who'd be your top choice? 
RUFFALO:  Oh wow, that's pretty crazy. Well I think Zoe Saldana would be a great She Hulk. It'd be nice to see someone like her join the Avengers. Or someone quiet and demure like Emma Stone would be nice. But it would be up to the powers that be."

Now, this is very interesting, indeed. Emma Stone's character in "The Amazing Spider Man 2," Gwen Stacy has died. Does that mean Marvel can hire her? We're not really sure as Sony might bring her back in some way.

"Q:What makes you Hulk level angry?
RUFFALO:  People messing up the environment with little care of the people and living things it will effect. Climate Change denial bums me out but that is mostly people who just haven't looked too deeply into the issue or have very little regard for science. Cruelty, and selfishness upset me and greed is a major ugly quality in people. Wars also suck."

Ruffalo is an environmentalist and he has often used his celebrity status to advocate this.

See more of Ruffalo as the Hulk in "Avengers: Age Of Ultron" on May 1, 2015 as we await the Hulk's solo movie.