The Knee Capper is a melee weapon for the Demolisher class in Blitz Brigade. It was added in the Demolisher update, update 9, and is currently the third most devastating melee weapon for the Demolisher class, behind the Brass Bomber and the Head Banger. It is a pretty good weapon, and can kill all classes in 1 or 2 shots except Gunner (assuming the enemy lacks an upgraded shield). It is a spiked mace.