Demon Guns: Bolverk (魔銃・ベルヴェルク Majū: Beruveruku, localized as Arcus Diabolus: Bolverk) is an Arch-Enemy Event Weapon in the shape of a pair of handguns. It is wielded by Noel Vermillion, and previously by Three.
Bolverk can perform attacks at will in the desired location, regardless of walls and other obstacles, detonating a Magic Formula-based blast wherever one aims it. It is known that it serves not only as a weapon, but also as a limiter to hold back Noel's hatred. During the course of BlazBlue: Continuum Shift, her strong hatred for Hazama unleashed the limiters.
During the Great Dark War, Bolverk had a multitude of owners, including Three of the Ten Sages. Bolverk was given to so many owners over time, its location eventually became unknown even to Jūbei until its possession by Noel Vermillion. When she was still a child, she was attacked by a monster. Then, for some reason, Bolverk suddenly appeared right in front of her.
- Bölverk is one of the names of Odin, which means Evil Worker or Evil Deed.