Stock Robots were robots provided by the Robot Wars production crew in order to make up the numbers in a given event. Only five were ever seen in the history of the show. Three of them (Grunt, WYSIWYG and Eubank the Mouse) were required to compete in the first series to add to the 33 genuine competitors. They were prohibited from reaching the Arena stage during their heats, resulting in them being eliminated in their Trials after clearing The Gauntlet without much difficulty. The three Stock Robots from the first UK series were robots from international robotic combat competitions that took place before the televised show began.