Demolishor is part of the Constructicons, a sub-group of Decepticons who transform into construction vehicles. He transforms into a red and white Terex O&K RH400 hydraulic mining excavator. His height is 86 feet and his partner is Sideways. Demolishor is cowardly when there's no leader and he isn't the brightest one, but his size makes up for lack of brains. In Revenge of the Fallen, Demolishor transforms when his heat signature is displayed on a thermal camera, and starts swatting NEST helicopters. He then proceeds to make himself mobile on the road. In the the air, a C-17 Globemaster III carrying Optimus Prime deploys the Autobot leader safely to ground. Optimus Prime then transforms on the highway and jumps onto Demolishor's face before repeatingly shooting Demolishor, forcing him to crash. Demolishor's last words are: "The Fallen shall rise again." Prime then chambered his Ion Blaster and executed Demolishor.