An online leak has suggested Spider-Man will make a cameo appearance in 'Avengers: Age of Ultron'.

The iconic comic book character recently joined the Marvel Cinematic Universe and in a clip that has appeared on the internet over the last few days, Spider-Man can be seen interacting with a window cleaner and joking that he'd missed a spot of dirt.

However, the reported appearance of Spider-Man comes amid a casting change and a redesign of the character's suit.

Last week, meanwhile, Kevin Feige, the president of Marvel, confirmed that the studio's 'Spider-Man' movie will not be an origin story.

He revealed the new movie will work on the assumption that its audience already knows the ''specifics'' of Peter Parker's life.

He said: ''In Spider-Man's very specific case, where there have been two retellings of that origin in the last whatever it's been - [13] years - for us, we are going to take it for granted that people know that, and the specifics.

''It will not be an origin story, but with great power comes great responsibility. It is inherent to who his character is. But we want to reveal it in different ways and spend much more time focusing on this young high school kid in the Marvel Comic universe dealing with his powers.''

He also said the Marvel Spider-Man will wear a distinctly different outfit to previous on-screen incarnations.

Kevin explained: ''We've already designed the costume, which is different than any of the ones that have come before. And yet ours is classic Spidey, as I think you'll see.''