Speaking of the incestuous twins, the Scarlet Witch and Quicksilver have so far only appeared in the end credits sequence for Captain America: The Winter Soldier, but the brief scene gave fans a strong indication of how they will initially tie into Avengers: Age Of Ultron. Imprisoned by Baron Von Strucker, Wanda and Pietro are likely to first meet the Avengers as enemies, acting either as pawns or allies of the Hydra villain. Although it's known that the twins will eventually join forces with Earth's Mightiest Heroes, a full blown battle between them would certainly be a highlight and could very well end up being the movie's opening scene. Just imagine it; Quicksilver plucking Hawkeye's arrows out of the air, raining a thousand blows on Captain America as the Scarlet Witch disrupts Iron Man's armor and holds the Hulk at bay with her hexes.