Citadel (Next Avengers: Heroes of Tomorrow)


 * Citadel is from the Non MAU video .

The Citadel is a large building in the center of. It was built by and its robots to be its headquarters. There, it could monitor all that went on around it. It also housed Ultron's where it kept the remains of all the fallen heroes. The interiors could shift to suit Ultron's needs and the nearby towers could move towards and away the Citadel. Ultron captured and kept him in the Citadel to lure the children of the  to it. It worked and they fought Ultron and the. The snuck in and rescued them.