Bruce Banner's Hulk may have some surprises for the waiting fans on the sequel of Avengers movie – "The Avengers: Age of Ultron".

Many fans were delighted with the character of Hulk in the first film. Actor Mark Ruffalo hinted that the Hulk will have a few excellent scenes when he returns for the 2015 release.

In his Twitter account, Mark posted, "Let me put it to you this way. There is a Hulk surprise that is equally delightful as when he smashed the bejesus out of Loki [in Avengers]."

Although the actor did not specify what his role could be, fans could expect that he will get his fair share of screen time just like his fellow Avenger Hawkeye (Jeremy Renner). Just do not expect Hulk to toss Ultron (James Spader) around the room like a ragdoll like in the first film.

Marvel Studios' president of production Kevin Feige hinted that the second Avengers film will allow other characters to shine such as Hulk and Hawkeye. In the previous film, fans can remember that Captain America, Thor and Ironman dominated the screens while other play a lesser role in the movie.

Meanwhile, it is still unknown whether a sequel for the stand alone "Hulk" movie will happen in between "Avengers 2" and "Avengers 3". Mark Ruffalo confirmed that he has not heard anything yet from the producers about the Phase 3 of the Hulk project.

"I would really like there to one day be a Hulk movie but it has to be just right," Ruffalo explained on his Tumblr cited by Enstars. Dr. Bruce Banner in the 2003 Hulk film was played by actor Eric Bana.

On the other hand, fans will have to painstakingly wait for the release of next Avengers film as "The Avengers: Age of Ultron" will hit the theaters on May 1, 2015.