The biggest issue for Penn was trying to create a script that would fit in with Thor and Captain America, a tricky one to keep track of given that neither film has yet been released.
“My job is to kind of shuttle between the different movies,” he told Crave Online, “and make sure that finally we’re mimicking that comic book structure where all of these movies are connected.
“We are learning it as we go and it’s pretty complicated,” he continued. “I have regular meetings at Marvel to catch up on continuity. There’s a board that tracks, ‘here’s where everything that happens in this movie overlaps with that movie.’ It’s just what they do in the comic books.”
A fairly painstaking process then, but one that finally bore fruit in March of this year when Marvel Comics Editor In Chief Joe Quesada revealed via his Twitter feed that he had a first draft of a script for The Avengers sat on his desk.
“Definition of 'goose bumps,” gushed Quesada, “Pressing enter and watching a screenplay entitled 'AVENGERS' come out of my printer.”
However, Penn’s labour of love would prove only a template for the finished article, as Marvel had another comic-book geek in mind to make the story his own…