|Users||Unnamed Millefiore soldier|
|Anime Debut||Episode 138|
The Storm Hyena is a Storm Attribute Box Weapon with fangs that have high wounding powers. Because it is relatively simple to copy and easy to handle, even for novices in Box Weapons, it became the Millefiore's mainstream Box Weapon. It is often seen in swarms in the battlefield. Its attacks are quite orthodox, but, just like any Box Weapon, it is possible for it to execute ace-class jobs if the master's abilities are high.