WIP Skyquake only speaks in roars. Since he cannot talk, he is impossible to reason with. Even though Starscream is technically his commander, he can only be controlled by Mindwipe (http://www.tfw2005.com/boards/radicons-customs/334351-devil-bat-mindwipe-strike-parts.html). Mindwipe only has to point him in the right direction and any foes or allies in his path are destroyed by his repeating missile launcher, vulcan cannons, ogre's club, and gigaton bomb. He remains sealed in a container until the Decepticons are desperate enough to unleash him.