The bluefire sword is a disposable used by Golden Stanlie in Metal Shadow Prelude. It is a sword enshrouded by magic bluefire, which allows the blade to cut through even magic defenses. After Stanlie died, Agent Ex took the sword and used it to destroy Noa Rylie's Sin cloak. He later lost the sword in a battle alongside Noa and the extended Elf Squad against Raffikke and her half-men.