The Weapons Archive (ウェポンアーカイブ Wepon Ākaibu, "Weapon Archive") is the boss of the first Wily Castle stage from Mega Man 10. It is a room with Special Weapon data of Robot Masters from previous games, and contains three blocks that can fly and attack with the weapon of one Robot Master. There are three Weapons Archives in the stage, the first room containing data of Elec Man, Wood Man, and Gemini Man; the second data of Ring Man, Napalm Man, and Flame Man; and the third data of Slash Man, Frost Man, and Tornado Man. Each block has a weakness similar to that of the robot whose data is being copied. For example, Elec Man's block is weak against a cutter weapon, Gemini Man's block is weak against a weapon that travels along floors and walls, and Ring Man's block is weak against a fire weapon, just like their original counterparts.