The Volcanic Erruptor Crystal is an ultimate type crystal apartly formed in a volcano near Mt.Fuuji.(Also nearer to Mt.Everest).It was made/formed to control the fire of the whole universe.It can even control the power of the Sun,a star who stands in the middle of the Solar System.It has a huge power.The Volcanic Erruptor formed the Shadow,Sun's battle beast.When Shadow's beast transformed from a light beast to a shadow beast,the crystal became fully black.