While it's been teased that the actor will play a major role in The Avengers: Age of Ultron, maybe even playing a mo-cap version of Ultron, it hasn't been confirmed which character he will take on. The actor dropped another significant hint in a recent interview, revealing that Marvel wants to bring in a love story similar to Dom and Letty's relationship in the Fast & Furious franchise.
"Marvel was excited about bringing a different kind of relationship, a different kind of love story, I guess kind of inspired from the Dom-Letty relationship, into the Marvel universe."
The biggest romance in The Avengers comic book series is between Vision and Scarlet Witch. Many have speculated that Vin Diesel is playing Vision, a creation of Ultron. And its the only romance known to exist between new characters in terms of what Joss Whedon is doing with the screenplay. His version of Scarlet Witch is known to be modeled after Saoirse Ronan, and she may play the part, though that hasn't been confirmed. Do you think we'll see a Vin Diesel/Vin Diesel make out scene?
Then again, others have speculated that this "love story" he's referring to is Thanos and his "relationship" with Death. That information almost certainly rules out The Avengers: Age of Ultron villain Ultron, which we reported last week may be a possibility. Since Ultron wants to wipe out all of humanity, its unlikely that the robot will have a love story. Although, director Joss Whedon did say that the villain will have a completely different origin story. Does that backstory involve android lust?