 -- As we near closer to the premiere of "Avengers: Age of Ultron," the Hulk himself Mark Ruffalo is dishing details about what we can expect from his alter-ego character.

In an interview with Empire.com, Ruffalo told the online mag that fans could see a different side of Bruce Banner when the movie begins.

"I think he’s definitely matured a little bit since the last one. He’s become more acclimated to this thing and to being part of the team. I think he feels more a part of them all. But in this particular take on it, it’s a much more character-driven version of The Avengers than the first one. It gets a little deeper into each character. S.H.I.E.L.D. is not happening anymore, so there’s not that much time spent with the S.H.I.E.L.D. stuff. I feel that every character has their own cool little thing happening. I had great stuff in the last one but there’s even more stuff in this one. It’s nice, because I know this character now after playing him twice…"

When asked if Banner could lose control over the Hulk in the new film, Ruffalo suggested that anything is possible.

"Hulk is the kind of wild card. He’s the loose cannon of the group. He’s more like an atom bomb. You could guess where he’s going to go but he could go either way. I think that there is, obviously, the day when everyone expects it to go wrong and that day comes. And they’re ready. And Bruce designed the contingency plan. As much as you feel Bruce has some mastery over it – certainly, with ‘I’m always angry’ and he can turn into it at will – I still feel that there’s some part of him that doesn’t completely trust it and doesn’t completely trust himself.

"There’s a battle going on between these two opposing egos that live inside him," he continued.

"The Avengers: Age of Ultron" is to be released in theaters May 1, 2015.

The movie's producer is Marvel Studios, which is owned by The Walt Disney Co., which also owns ABC News.