In the comics, the twin brother and sister duo (Wanda and Pietro Maximoff) are part of a large group of mutants in the "X-Men" franchise. The characters are in a unique position because they also happen to become Avengers.
Because Marvel licensed the X-Men characters to 20th Century Fox for use in films back in the '90s, the two can't be referred to as such in Disney's "Avengers" film.
One of the biggest questions for fans heading into "Age of Ultron," was discovering how Marvel would address Scarlet Witch and Quicksilver in the film.
Fans don't have to wait long to find out.
Warning: Some minor spoilers ahead if you haven't seen "Avengers: Age of Ultron."
In the first few minutes of the movie, Captain America refers to the duo as "enhanced.""We have an enhanced in the field," Cap tells the rest of the Avengers.
Several times throughout the first leg of the film, this is how Wanda and Pietro are referred to when they're introduced on screen.
Thor asks Captain America about Quicksilver at one point inquiring, "The enhanced?"
Again when Cap talks to S.H.I.E.L.D. Agent Maria Hill (Cobie Smulders) he asks about "the two enhanced."
Later, in another country when the two run into another character he intros them by clarifying that they're "the enhanced."
That's it.
There's no mention of mutants or of their famous X-Men dad, Magneto. (Yes, that Magneto.)
It turns out the twins were *mini-spoiler* voluntarily genetically modified by terrorist organization H.Y.D.R.A. *mini-spoiler* and that's how they acquired their superpowers.
For comic lovers, it sure takes some of the excitement out of the two characters who have a history in the X-Men comics before joining up with the Avengers.