Ruination is an Autobotcombiner formed from five Wreckers. Given to the survival rate of the Wreckers in combat, this may not be the best of ideas at all.
Ruination is the combined form of five Wreckers:
In Loose Cannons, Wheeljack mentions that Impactor (the central component of Ruination) had died along with Roadbuster (the left leg). This effectively means that Ruination can no longer exist; even if Impactor and Roadbuster could be replaced by others, they would presumably not produce the same combined being.