|This article is about a/an form-exclusive weapon in Kamen Rider Gaim.|
The Melon Defender (メロンディフェンダー Meron Difendā) is the Armored Rider Arms Weapon granted either by accessing Melon Arms or via the summoning ability of Kiwami Arms. True to its shield design, the Melon Defender can be used to block attacks, thus leaving the opponent wide open. In addition to being a shield, it has sharp curves and a sharp point on the bottom of the shield which allows the Melon Defender to also act as a melee weapon. It can also be thrown towards an opponent and return like a boomerang.
The Melon Defender consists of the following parts:
- Tai Inga (タイインガ Tai Inga) - The top section. It is a battery unit that absorbs shock energy and converts it into its own energy. The energy is used as an electromagnetic shield that wraps around the entire Melon Defender.
- Rainigan (ライニガン Rainigan) - The red jewel. It is a type of mineral that controls the Kanesasumata.
- Kanesasumata (カネサスマタ Kanesasumata) - The golden stripe running down across the Melon Defender's length. It is an electromagnetic shield oscillator. It is wrapped in a metallic frame and usually functions as armor in its own right. However, it can instantaneously form a magnetic field against opponents' attacks, reducing its power of impact.
- Hasaishin (ハサイシン Hasaishin) - The bottom pointed unit. It is a blade that can penetrate any hard skin and armor. Its lethality is increased with the user's power and the Melon Defender's weight.
- Sokutouen (ソクトウエン Sokutouen) - The crescent blades attached to the sides. With enough skill and aim, it can destroy opponents' weapons that it took.
- Armored Rider Zangetsu (Gaim Episodes 2, 4, 9, Sengoku Movie Battle, Gaim 10, 11, Gaim Gaiden: Duke, Gaim 36, Movie War Full Throttle, S.I.C. Hero Saga, Kamen Rider Zangetsu: -Gaim Gaiden-)
- New Generation Rider Zangetsu Shin (Kamen Rider × Kamen Rider Drive & Gaim: Movie War Full Throttle)
- Armored Rider Baron (Kamen Rider Gaim Hyper Battle DVD: Fresh Orange Arms is Born!)
- Armored Rider Ryugen (Kamen Rider Gaim Hyper Battle DVD: Fresh Orange Arms is Born!)
- Armored Rider Gaim (Kiwami Arms) (Gaim Episodes 32, 33, 37, 46, Movie War Full Throttle, Final Stage)
- Ganbarider (Kamen Rider Battle: Ganbarizing)
- Melou Blast (メロウブラスト Merou Burasuto): After Zangetsu activates his Sengoku Driver's Squash function, he throws his Melon Defender charged with maskmelon-shaped energy at the enemy before slashing them with the Musou Saber.
- This is the first Arms Weapon to be in the form of a shield, followed by the Apple Reflecter.
- Unlike the Apple Reflector, the Melon Defender does not come with a sword, though its primary user, Zangetsu, is also armed with the Musou Saber by default.
- This is the only Arms Weapon that can be used as three kinds of weapons. In this case, a shield, a boomerang, and a melee weapon.
- The Melon Defender's use as a boomerang projectile shield is similar to Captain America's signature shield.
- The Melon Defender would evidently also be the Arms Weapon of the hypothetical Zangetsu Arms granted by the Zangetsu Lockseed, which is exclusive to the DX toyline. Indeed, by performing the Au Lait function on the DX Sengoku Driver, the inserted Zangetsu Rider Lockseed makes the announcement, Melon Defender!.