Arcus Diabolus: Bolverk
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The Arcus Diabolus: Bolverk (
Created by Nine the Phantom during the Dark War to combat the Black Beast, and gifted to Three of the Ten Sages shortly afterwards. Bolverk is one of the various Nox Nyctores who's core was not removed after the war ended as it went missing shortly after Three's death; it exchanged hands so many times that even Jubei became unsure of its whereabouts. 
After having been absent from history for nearly 80 years, Bolverk resurfaced and was re-purposed to seal the emotions of Mu-12, who would later become Noel. She accidentally summoned Bolverk for the first time when she was attacked near her home prior to her introduction to the Military Academy.  Yuuki Terumi broke the seal that Bolverk had on Noel's emotions , although she later regained control of them and Bolverk some time later. It is assumed that Bolverk still remains with Noel in the new world created by Ragna the Bloodedge.
Bolverk has the ability to fire shots that pierce through space and detonate an Armagus blast. It can attack anything that the weapon and wielder deem as a target, and can ignore walls and various other obstacles.  It can also transform into various other forms. These include a: gatling gun (Fenrir); rocket launcher (Thor); shotgun, and a railgun (Sleipnir) - all are named after various ancient Norse deities. Shots fired by Bolverk are spherical and have a symbol of its handgun form being crossed over one-another.  Like other Nox Nyctores, such as the Mucro Algesco: Yukianesa, Bolverk can be summoned at any time by its wielder, but Noel chose to keep it in holsters in BlazBlue: Chrono Phantasma and onward.
Like other Nox's, Bolverk has adverse effects on its wielder's mentality. Chiefly, Bolverk seals away emotions, such as hatred and anxiety, which makes it less dangerous than the other Nox's in terms of mental instability, but it can cause a wielder to become reckless as emotions such as fear are eliminated. Bolverk also communicates with its wielder, but unlike other Nox's, the relationship is relatively good with Noel. Because of its ability to seal away anxiety, Noel was able to communicate with other people, and the Nox has even warned her of beings it deems dangerous. 
- Three - created for; wielded throughout the Dark War until her death.
- Various individuals after the Dark War.
- Noel Vermillion - current wielder.
Arcus Diabolus: Bolverk
Nox Nyctores number 3. Possessed by Noel.
This weapon can perform attacks at will in the desired location, regardless of walls and other obstacles. It was once possessed by Three, one of the Ten Sages.
It's known that it serves not only as a weapon, but also as a 'Limiter' to hold back Noel's 'hatred.' 
"Arcus" is Latin for "Arc" or "Bow", while "Diabolus" is Latin for "Devil". "Bolverk" was an alias used by Odin and means "Evil Worker". In localization, Arcus Diabolus: Bolverk can literally translate as "Devil Bow: Evil Worker".
- BlazBlue: Chrono Phantasma, Story Mode, Six Heroes, Episode 07
- BlazBlue: Calamity Trigger, Story Mode, Noel Vermillion - lost child
- BlazBlue: Continuum Shift, Story Mode, Noel Vermillion - Desperation
- BlazBlue: Continuum Shift, Teach Me, Miss Litchi! Episode 05 - Ars Armagus? Nox Nyctores? What the?
- BlazBlue: Remix Heart, Chapter 15
- BlazBlue: Calamity Trigger, Story Mode, Carl Clover - Promise, Alternate End
- BlazBlue: Central Fiction, Library Mode, Weapon #03