Scarlett Witch vs The Vision: 
In comic-book universe, she has an intimate relationship with Vision and even had two kids. But in the movie-world, the two of them decided to end up on opposite camps. He is not really an AI, he is more a Cybernetic creature who yearns to be more human. He would prefer to be more man than machine. Scarlett Witch can use her supernatural powers connected with mind-gem to control him and let others fight it out against Team Iron-man.
