. "The Decagon is a giant building in Iacon. It held the communications hub and was the lifeline for the entire city - well, according to Ratchet anyway. Optimus, Bumblebee and Ratchet traveled there to save Iacon form the Decepticon invaders, in an effort to reorganize the defenses."@en . "The Decagon is a giant building in Iacon. It held the communications hub and was the lifeline for the entire city - well, according to Ratchet anyway. Optimus, Bumblebee and Ratchet traveled there to save Iacon form the Decepticon invaders, in an effort to reorganize the defenses."@en . . "The Decagon"@en .