Thread:Mygeto/@comment-1753748-20141020211339/@comment-24152851-20150609133143

Look what I found: http://www.slashfilm.com/grey-hulk-in-avengers-age-of-ultron/?utm_source=zergnet.com&utm_medium=referral&utm_campaign=zergnet_517455

Seems like Age of Ultron originally intended to feature Grey Hulk, but ended up being cut from the final thing.