The main focus of this archtype is there defence points. All of them can activate their effects through reducing their defence by a certain amount, but can also gain a certain amount back by discarding Rock type monsters. These also come with secondary effects which require a tribute in order to activate them. The star card for the arctype is Bouldark Giant. This brute comes with some major effects one increasing its own attack and the other to help swarm the field, in short it is a major support for the archtype.