Tenshu the water dragon sealed inside a sword, part of his soul released by merlin the wizard created the legand of the blue legandary hedgehog that would save the world.
For a midnight blue male hedgehog pup had formed from the fragment, when of age he was chosen by King Arther to be one of his knights, Zectorius could summon the dragon inside the sword unknowing to him tell later he did not know his WAS this dragon his summened in his time of need on missions for his king.