Whedon chose Ultron as his villain and is introducing Scarlet Witch... conspiracies!

I think he'll probably be in it but I doubt he'll have a huge role.

There was some hubbub post Avengers about Coulson returning as Vision, but given Agents of SHIELD and comments from Clark Gregg, I find it unlikely. Perhaps he'll pop up in Avengers 3.

@jonsmith: I was thinking more about the rumor regarding Paul Bettany, Jarvis, being Ultron before James Spader was cast. Maybe he gets reprogrammed into Vision. I'm not sure if it's true, but supposedly there was a sub-plot in IM3 about Jarvis making some comments regarding humans that was dropped from the final script.

At the end. The roster will be huge to face off against Thanos.

He could become the perfected version of Ultron

Ultron did build Vision to use against his creator so it could work, basically have him come in as a henchman type who turns on his master toward the end of the movie.

@joshmightbe: I like it!

I think that the Vision will show up in the third film, and have a different creator. I think he will also be wearing a different costume, since the green and yellow one would look awful on screen.

werent there rumors about vid desil(i know its spelled way wrong) being cast as vision on his twitter? personally i love vision and would him in it

there are too many members and characters for a 2 hour movie. right now i'm kind of afraid.

I want to see these characters, but all at once could mean a disaster.

I think FOX does 1 thing right and that's not jamming 20+ popular x-men into one movie. they spread things around.

@thorson: Many characters were left unused in the X-men movies- Colossus, Brotherhood mutants, Cyclops,

I don't see too many characters as an issue depending on the approach is taken. Considering the number of characters, some character will probably get the shaft in terms of character (poor Hawkeye, we're never going to learn more about you). Fortunately the solo films exist to provide the character development that some of these characters won't get, leaving room to focus more on new characters.

Also, wanted to see if there was any rumors regarding Paul Bettany and Vision and found this:

http://www.superheromoviesnews.com/2013/08/paul-bettanys-jarvis-to-become-vision.html

I find it suspect considering the source, but the idea is out there.

@oscars94 said:

At the end. The roster will be huge to face off against Thanos.

Falcon why?

I think that would be a great way to do it, really.

Though, with so many characters already being introduced, I wouldn't mind if he was a post credit reveal either.

@grenadeflow: He'll be in Captain America: The Winter Soldier. I just assumed he would be joining.

Yes considering the Ultron is the one who creates Vision. It could be an end credit part when he is revealed to be created.

I want Vision in Avengers 2 for the sake of numbers. I think The Avengers need members like Vision or Ms. Marvel if they really are going up against Thanos in Avengers 3.

If they're introducing Scarlet Witch AND Ultron then they would be stupid not to.

In Age of Ultron, it would probably seem rushed to have Vision appear in the film if Quicksilver, Scarlet Witch and Ultron are all getting introduced; it might also be a bit too much in regards to expansion of the roster considering that either/both War Machine and/or Falcon could potentionally join the team.

I'd like him to be a cameo or a omen of coming out soon but I rather keep the Avengers Cast how it is.

(+)

coulson is vision

agents of shield gave a little major hint that coulson could be vision. So i'm not ruling out my assumption.