Tri-Hard

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

Description
It appears to be a railgun with at least three "modes", a compact mode, a gun mode and a melee mode. In the Volume 2 Trailer, it is shown to be able to produce some kind of electricity for ranged attacks.

The weapon is primarily gray, with a blueish light above the grip. The area between the weapon's grip and the butt end are fused, and the barrel is boxy in appearance. The barrel also has a 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 railgun form, Neptune's gun can also transform into a Trident with the prongs retaining the electricity effect the barrel of his gun has, although the front of the blade is quite similar to a Glaive in design.

The Trident is a reference to Neptune's, the roman god of the sea, weapon and symbol, and also is a reference to Neptune's appearance inspiration from Korean fashion and K-pop style, one specific example being T.O.P of the boy band Big Bang, as the weapon was used by Korea martial artists in the 17th to 18th century.