The Grand Cross Archery (グランドクロスアーチェリー Gurando Kurosu Ācherī) is a crossbow type weapon formed from the Arms Microns Optimus Prime Blaster, Bumblebee Sword, and Bulkhead Knuckle. It is one of the many Super Combo Weapons in the Autobot arsenal.
- Optimus Prime Blaster (Gacha Arms Micron, 2012)
- Energon Crystal: SP Hard
- Bumblebee Sword (Gacha Arms Micron, 2012)
- Energon Crystal: AP Hard
- Bulkhead Knuckle (Gacha Arms Micron, 2012)
- Energon Crystal: HP Hard
- The Grand Cross Archery is formed from the first 3 Autobot Gacha Arms Microns. Bulkhead Knuckle forms an oversized handle (pun intended), Bumblebee Sword forms the bow and Optimus Prime Blaster forms the barrel.
- This weapon can also be formed with the "MX" clear-blue versions of the three toys.
- All of the information on the Grand Cross Archery, including its very existence, comes from the online "Arms Up Mission" game.
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