US robot combat series. The final four fights in the Round of 16 decide who moves forward to the quarter-finals and who goes home - some top seeds have already been eliminated, but it's still the most elite field ever assembled in the history of the show. These are the world's greatest fighters, but reputation isn't enough as they will need skill, determination and aggression to make it through - the Vegas crowd is at fever pitch and the bots are ready for battle...