If there's one consistent aspect of Marvel movies, both in and out of the Marvel Cinematic Universe, it's that Stan Lee, the Godfather of comics himself, will make a cameo somewhere in just about every single one of them. His most memorable MCU appearances to date include as a man poisoned by a drink containing Hulk's blood (The Incredible Hulk), Larry King (Iron Man 2), an old guy rejecting the idea of superheroes in New York (The Avengers), and a security guard at the Smithsonian (Captain America: The Winter Soldier). It's such a huge tradition in these movies now that there would be a considerable uproar if he didn't show up in one, and it has been confirmed that Lee will be showing up in Age Of Ultron, in a cameo which he has deemed his favourite of the lot no less. The Likely Answer: Lee has said that his cameo is extended and takes place over two scenes placed next to one another. What about as a janitor at the new Avengers tower? Otherwise, this could literally be anything.