3. The Vision
The question asked at the Riddick panel during Comic Con was, "What is your vision on what character you are playing for Marvel?" Coincidence? Vin Diesel has expressed interest in playing this role for Marvel Studios and many fans would like to see him take on the role of the cyborg Vision. With Ant-Man due to get his movie in 2015, it is extremely possible that Vision will appear, so this could prove to be the role Vin Diesel is playing. Joss Whedon has also included Quicksilver and The Scarlet Witch in his script for Avengers: Age of Ultron, and in the comic books, The Scarlet Witch ends up marrying The Vision. This further indicates that this character will indeed likely appear, yet whether he is played by Vin Diesel or not is another story. I for one wouldn't be disappointed if this is the character he ends up playing.