If you have never watched it, I should explain the set-up. Small groups of friends or relatives build a remote-controlled robot - usually of the wheeled or tracked variety. These are equipped with various weapons, which can include anything from a circular saw, or a vicious hammer, to a wedge with which to overturn an opponent. During the heats these robots fight one another in single combat in a specially-designed arena, in front of a crowd of baying enthusiasts, until a winner emerges. The arena includes a number of traps and the predatorial house robots like Dead Metal or Sir Killerlot which can turn on either of the competitors if they come in range.