Plunderbird was the name given to five separate box-wedge shaped competitors that competed in the first five series of Robot Wars - the only robot in Robot Wars to fight in all five of those wars. Whilst Plunderbird 2 enjoyed some success by reaching the semi-finals, the other models tended to be unreliable and the robots lost in the first round on frequent occasions. The even numbered series' versions of Plunderbird weighed over the then Heavyweight Limit.