The Storm Tyrannosaurus is a Storm-attribute Box Weapon that merges the body of its user with the power of the Tyrannosaurus through a Carnage Box. Using the latest technology, the Millefiore Famiglia was successful in embedding Boxes in the human body. A theory goes that there was no choice but to imbed the Box inside a body. The reason was that the Box's power was so extreme that its performance is not stable when the Box is by itself. At any rate, it is a Box Weapon that conceals an amazing fighting power.