The Avengers: Age of Ultron will be getting a visit from Quicksilver and Scarlett Witch, but the sibling heroes may be more of a bane than a boon for the Avengers.

'Avengers 2' Black Widow's Role Cut Down Due To Pregnancy? How Is Joss Whedon Hiding Scarlett Johansson's Baby Bump?

Earth's Mightiest Heroes are a ticking time bomb at the best of times and Aaron Taylor-Johnson (Quicksilver) claims writer/director Joss Whedon is planning on using Magneto's children as a catalyst for more superhero strife in Age of Ultron

"[Joss Whedon] said to me, 'Do you want to be in Avengers 2? There is a super hero I'm thinking of for you,'" Johnson explained to I Am Rouge. "The thing for me was for him, 'Why add any more super heroes to this thing?' He said, 'No, there are these two characters that I want to bring in to like f--- with the Avengers and not be just an add on.'"

'Avengers 2' Hulk Receiving An Upgrade? How Will Mark Ruffalo Change His Performance For 'Age Of Ultron'?

Iron Man (Robert Downey Jr.), Black Widow (Scarlett Johansson), Hawkeye (Jeremy Renner), Thor (Chris Hemsworth), Hulk (Bruce Banner), and Captain America (Chris Evans) put aside their difference after Coulson's (Clark Gregg) death before the Battle of New York, but what will make them join forces to take on Ultron (James Spader)? More importantly, will they be able to stay together despite whatever mayhem Quicksilver and Scarlett Witch (Elizabeth Olsen) will throw their way?

Find out more when The Avengers: Age of Ultron hits theaters on May 1, 2015.