Central to the appeal of Battletech are the Battlemechs, giant robots piloted by a military aristocracy, massively complicated and difficult to produce, calling to mind the armor of knights on ancient Earth or the chariots of warriors on even ancient-er Earth. Mechs are huge machines weighing from 20 to 100 tons and broken down by weight, role, and technology level. There are advanced and sleek mechs, like the Mad Cat or Thor, and chunky, brutal, crude mechs like the Awesome and Atlas.