Umber Storm

Umber Storm is the signature weapon of Narcissus Melyn. In its inactive form, it looks like a top hat and is worn as such; but when activated it works as a combination grenade launcher and circular saw.

Description
When in hat form, Umber Storm resembles a black top hat with a yellow band around the crown. A small expanding handle sticks out from the band and can rotate its circumference completely, allowing Melyn to vary the way he handles the weapon.

When in grenade launcher form, Umber Storm launches what seem to be bright orange dust canisters. These grenades explode on impact, creating a yellow-orange blast similar to fireworks. Individual grenades can also be exploded remotely. The grenade launcher is fed by a revolver-type rotating cylinder with several individual chambers, stored in the center part of the crown. In addition to its normal firing mode, this weapon is also capable of firing all six grenades simultaneously; the entire front of the weapon flips open to expose all the rounds stored in the chamber, which can then be fired all at once.

Trivia

 * Umber is a dark yellowish-brown pigment.
 * The word Storm most commonly refers to the weather phenomenon of rain and lightning; but it can also mean a "an outburst or explosion."