Tri-Hard

Neptune's Gun is Neptune's weapon of choice.

Description
The gun appears to be an energy weapon with at least four forms: a compact mode, a gun mode, a glaive mode, and a trident mode. The gun mode appears to fire some form of electrified projectile for long-range attacks.

The weapon is primarily gray, with a bluish light above the grip. The area between the weapon's grip and the butt end are fused, and the barrel is boxy, with light gray patterns on it.

The weapon's barrel contains a light blue tube where electricity is generated. What seems to resemble a dot-sight can be seen on the top of the weapon at the very front.

Aside from its gun form, the weapon can also transform into a glaive, the blade of which possesses a blue glow, suggesting it may be electrified.

The blade of the glaive can also split into a trident, which retains the electricity effect present in the gun form's barrel.

Trivia

 * The trident is a reference to the weapon and symbol of Neptune, the Roman god of the sea.
 * It is also a reference to Neptune's appearance taking inspiration from Korean fashion and K-pop style as a similar weapon, known as a Dangpa, was used by Korean martial artists in the 17th to 18th century.
 * Neptune's Gun is tied with Miló and Akoúo̱ and Gambol Shroud for the most transformations, having 3 forms.