Marvel's biggest heroes reunite in the one-hour preview of "Marvel's Avengers Assemble" this Sunday, May 26, at 11:00 a.m. ET inside Marvel Universe on Disney XD! Subscribe to Marvel: http://bit.ly/WeO3YJ Keep up with Marvel on: TWITTER: https://twitter.com/marvel FACEBOOK: http://www.facebook.com/Marvel TUMBLR: http://marvelentertainment.tumblr.com/ INSTAGRAM: http://instagram.com/marvel GOOGLE+: https://plus.google.com/+marvel/ PINTEREST: http://pinterest.com/marvelofficial/