Neptune's weapons consist of katanas and broadswords. In her HDD form, she uses a samurai sword.
Neptune's weaponry may refer to:
- Weapon/HDN/Neptune
- Weapon/mk2/Neptune
- Weapon/Victory/Neptune
- Weapon/Victory II/Neptune/Hyper Dimension
- Weapon/Victory II/Neptune/Ultra Dimension
- Weapon/Re;Birth1/Neptune
- Weapon/Re;Birth2/Neptune
- Weapon/Re;Birth3/Neptune
- Weapon/U: Action Unleashed/Neptune
- Weapon/MegaTagmension Blanc/Neptune
- Weapon/VS Sega Hard Girls/Neptune
- Weapon/4 Goddesses Online/Neptune
- Weapon/Super Neptunia RPG/Neptune
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