India, Sept. 30 -- The Russo Brothers have declined to confirm or deny whether Mark Ruffalo's Bruce Banner/Hulk will appear in the upcoming Marvel film "Avengers: Doomsday", even as they hinted that the character is connected to the story surrounding supervillain Doctor Doom.

Ruffalo's Banner was most recently seen in "Spider-Man: Brand New Day". Asked about his possible appearance in "Doomsday", Joe Russo told Empire Online that Banner is "certainly involved in the story that revolves around Doom".

"We will not confirm nor deny his appearance in Doomsday," he said.

Anthony Russo added that several cast members and characters who have not yet been announced are part of the film.

"The farthest we can go is to say, there are characters ...