"This is not your planet to rule. The Fallen shall rise again."-Demolisher to Optimus Prime.
Demolishor was a Decepticon and Constructicon who arrived on Earth following the first demise of Megatron. While Demolishor was not the sharpest tool in the shed, he was smart enough to know when to fight openly and when to stick to the shadows. Coming to Earth to find his leader dead, he went into hiding, gathering other Decepticons who needed a big, blunt instrument to cower behind.
After the Battle of Mission City, the leader of the Decepticons, Megatron, was killed. Demolishor arrived on Earth at some point after the battle to find his great leader was dead. Demolishor to go into hiding in Shanghi, and wait for a new leader to rise. During this time, he was found by Sideways, who used him as living cover from the Autobots, who had began to help N.E.S.T. In hunting down Decepticons who came to Earth to find Megatron, or survivors from Mission City.
They Eventully tracked down Demolishor, finding him in Shanghai. As Human soilders approached, he transformed, knocking a helicopter out of the sky's and rolling away, jumping into the Moterway and crushing all cars that came under his wheel, even picking one up and flinging it to its doom. Eventually, he was followed and caught up to by Optimus Prime, who jumped onto Demolsihor as he ploughed through a bridge. Riding atop the giant Decepticon, Prime fired at Demolishors arms at point blank, before demanding the Decepticon "pull over". Prime then knocked his foe off balence, sending Demolishor flying off the Moterway and brutally crashing to the ground. Wounded, he attempted to crawl away, but was surrounded by Human forces. Optimus Prime and Ironhide approached, and Prime asked if the Constructicon had any last words. Demolisher stated that Earth was not for the Autobots to rule, and that The Fallen would rise again. Prime then shot Demolishor in the head, killing him.